Chemistry Middle School

!UPDATE!

Get ready for a HUGEEEE surprise coming up! Hint: Points. LOTS OF POINTSSSS!

Answers

Answer 1

Answer:

Yay! Thanks :3 You da best :3

Explanation:

Answer 2

That is alot of points

Related Questions

Answering just one is fine. Please help. It's due in less than an hour

Answers

Answer:

Q 3: the answer is c, W

hope this helps

Q 3: C ( sorry for only one)

Which property do we observe when we watch kids blowing bubbles? a density b color c solubility d flammability

Answers

Answer:

its a

Explanation:

We observe when we watch kids blowing bubbles it is a property of density. Therefore, option A is correct.

What is density ?

The mass of a material per unit of volume is its density. Density is most frequently represented by the symbol, however Latin letter D may also be used. Mass divided by volume.

A liquid's density is a gauge of how heavy it is relative to the amount being measured. The liquid that weighs heavier is more dense if you weigh two liquids with similar volumes or quantities. A liquid that is less dense than water will float if it is gradually introduced to the water's surface.

By dividing a material's mass by its volume, the density of a substance may be estimated. The most common units for density are grams per milliliter, or g/mL, which is equivalent to grams per cubic centimeter.

Thus, option A is correct.

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Hi I need help , please help whoever helps I will give them a crown .

Answers

Explanation:

Here's what I came up with :)

^ the person above is correct

Help? Tysm if you do :>
Using the graph above, what was the cost of the most expensive invasive species?

200 billion US dollars

10 billions US dollars

148 billion US dollars

50 billion US dollars

Answers

I think it’s 148 billion US dollars if u look at the graph then at mosquitoes on total it is the highest and near 150 billion so it can be 148 billion US dollars
148 billion US dollars.

During nuclear fusion, what happens as energy is generated?
A. The mass gets larger.

B. The element becomes magnetic.

C. Some of the mass is converted into energy.

D. The nucleus of a large atom is broken into smaller atoms.

Answers

Answer:

C

Explanation:

leftover mass become energy in nuclear fusion

answer : C explanation: In a fusion reaction, two light nuclei merge together to form a single and heavier nucleus. This process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei and the leftover mass becomes energy.

What are fossil fuels composed of?
Carbon
Nitrogen
Oxygen

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Coal is a fossil fuel that is composed of carbon, nitrogen, oxygen.
Carbon nitrogen I actually just learned this

help plz this is sic

Answers

It is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed.

Hope this helps!

Answer: It is a chemical reaction

Explanation:

PLZZZZZ help ASAP!!!!!!! THANK YOU. :) i need all 3 and thank you again!

Answers

A.Transform
B.Divergent
C. Convergent
I agree with the person on top have a beautiful day :)

What's the difference between evaporation and distillation with an example.?

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Answer:

The main difference between evaporation and distillation is that evaporation is a process that involves a change in the state of matter while distillation is a process of separation. While the vaporization in evaporation occurs below the boiling point, the vaporization in distillation occurs at the boiling point.

Explanation:

Evaporation might occur when the sun heats up a puddle, and the water gets evaporated into the air. Distillation is a process used to purify water, and requires water to be boiled by a stove or fire.

Is this statement true or false?
The size and color of an object effects how it moves.
TRUE
FALSE

Answers

Answer:

True

Explanation:

The size of an objects effects how it moves

If the size is large the object moves slowly

And if the size is small the object move fastly

Help help help...?
What's one way we can reduce plastic's impact on the environment?

by shredding it into tiny pieces

by recycling it

by burying it

by burning it

Answers

Well definitely not shred it definitely not there yet, but instead what you can do is recycle it

Answer: It could be recycling or burning it. Pretty sure its recycling.

Explanation:

Sorry if this doesn't help.

Can someone please help

Answers

Answer:

b

Explanation:

The answer is B


Explain

Hi , I need help whoever helps me I will give them Brainliest .

Answers

I’m pretty sure it is Very rainy
It should be very rainy I’m guessing

By which process is sediment laid down?
its a test it's due at 10!

Answers

Answer: Deposition

Explanation:

Answer: Deposition? not sure

Explanation:

Finish the statement: A dwarf planet…
has enough mass to orbit either a planet or the Sun.
has enough mass to clear its orbit of other objects.
has enough mass to attain a spherical shape.
doesn't have enough mass to have its own moon.

It's not A

Answers

Answer:

has enough mass to attain a spherical shape.

Explanation:

hope this helps

PLEASE ANSWER:

An iron nail is left outdoors as part of an investigation to study rust. How would you record data for this experiment? The nail goes from dull gray to a reddish color. What can you infer from this observation?

Imagine you are Dmitri Mendeleev giving a lecture about his periodic table. Write the part of speech that describes the characteristics of a column, or family of elements

Answers

Answer:i THINK its " the outside germs can attach to it"

Explanation:

Certain things like rain and to much sun can cause this

Karen and Mary are camping in the woods. Karen used a match to light a camp fire. As she watched the the flame dance, Mary marveled at how such a little amount of energy (the match flame) could create such a large amount of energy (the fire). How should Karen correct Mary's statement?

Answers

Answer:the match didnt have all the energy its all the kindling or fuel in the fire

Explanation:

Karen should correct Mary's statement by explaining that the match flame itself does not create a large amount of energy. The match flame is a source of heat, but it is the wood and other combustible materials in the campfire that release a large amount of energy when they undergo combustion.

When Karen lit the match, it provided the initial heat energy required to start the combustion process in the campfire. However, the sustained and significant release of energy comes from the chemical reactions that occur as the wood and other materials burn. During combustion, the chemical bonds in the wood molecules break, releasing energy in the form of heat and light. This process continues as long as there is sufficient fuel and oxygen to sustain the fire.

In summary, while the match flame initiates the fire, it is the combustion of the campfire's fuel (wood and other materials) that generates the large amount of energy observed in the form of heat and light.

I need help with this

Answers

I’d say learning to swim, finding a new food source, or new shelter
I think it would be learning to hunt or finding food and learning to build shelter

NOOO LINNKKKSSS
A terrestrial biome characterized by coniferous evergreen tree's is the


A. tundra

B. savanna

C. temperate deciduous forest

D. taiga

Answers

The answer is D I hope this helps you !

Taiga is a Terrestrial Biome characterised by coniferous evergreen trees.

What is a Terrestrial Biome?

A terrestrial biome refer to a geographical area of land that have the same communities of plants and animals and the same climatic confitions. Biomes are classified base on trees, shrubs, and grasses.

Therefore, Taiga is a Terrestrial Biome characterised by coniferous evergreen trees.

Learn more about biomes below.

https://brainly.com/question/25630111

(HELP) Vanessa is conducting an experiment to see how exposure to different types and amounts of light affects the growth of pea plants. Her results are shown in the data table below.

Light Source Growth (inches)
Sunlight 1.09375
Partial Sunlight 0.81250
Artificial Light 0.78125
No Light 0.43750

To which place can Vanessa round her data values without significantly altering the level of accuracy in her results?
A.
nearest ten inches
B.
nearest inch
C.
nearest hundredth of an inch
D.
nearest tenth of an inch

Answers

The answer to your question will be B
I believe the answer is B

need help with this one

Answers

Answer:

the other person is correct

Explanation:

because Ik

1. First 2. External/another 3. Second 4. Accelerate 5. Balanced 6. Unbalanced 7. Constant velocity 8. rest 9. Go 10. Go

Please note that this wording is very general definitely not correct according to physics conventions I.e it is better to say in equilibrium than balanced

Which of the following elements is the most reactive?
A. Mn
B. B
C. Sr
D. Kr

Answers

Answer:

The answer to this question is......C

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Therefore, Sr is the element which is most reactive. The correct option is option C.

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

On going down the group of periodic table, size increases due to increase in number of shells, easiness to eject one electron increases. Group 2 elements are the most reactive as it has only 2 electrons to loose. Sr is the element which is most reactive among all the given options.

Therefore, Sr is the element which is most reactive. The correct option is option C.

To know more about element, here:

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Write a 5-6 sentence summary answering the following questions:

- What do you already know about heating devices and ice storms?
- What do you wonder about heating devices and ice storms?

( no random answer or incorrect answers will be flagged)

Answers

Answer: ⬇

Explanation:

Heating devices help during an Ice Storm. Heat devices can be used to keep you warm and your family warm. Heating devices are used to also heat your house. Heating devices that run on electricity can also be no help if an Ice storm knocks out the power. Can heating devices run solar?Why aren't towns prepared enough during an Ice Storm?

PLEASE HELP ME! THIS IS DUE TODAY AND I NEED TO GET IT DONE!!!

Harper gets up in the morning and uses the toilet. Then, she takes a short shower and brushes her teeth. She goes out. When she gets home, she uses the toilet. Then, she fills the dishwasher and runs it. Before bed, she starts the clothes washer, uses the toilet, and brushes her teeth.

1 : Calculate how much water Harper used during the day. Show your work.
2 : Could Harper use less water? Support your answer with data from your calculations.

Answers

Answer:

#1

The answer is 192

Explanation:

Add 5+2=7

7+30+20+50

7+100=107

107+35+25+35

192

:)

Answer #2

Yes Harper could use less water because just for brushing his teeth he used 2 gallons of water.

:)

I argue The......Answer is 192

Animals are identified by their characteristics. Both rabbits and horses are mammals. They share many characteristics. Which of these characteristics do they not share?

A) Number of legs

B) Way that they feed young

C) Type of feet

D) Type of food they eat

Answers

Answer:

A or C unless it is a multichoice question if so it is both!

c or d! most likely c because they obviously don’t look the same
d probably isn’t right because both animals like carrots and other vegetables

Can someone help me with this math question plzz thx!!

Answers

Answer:

i dont think that is math but i think it might be C

Explanation:

It should be C if not then I’m sorry

Sea caves form from waves breaking on a cliff and eroding the rock. Is this a physical or chemical change? [No Links]

Answers

That is a physical change.

Because it was the waves crashing onto the rock which made it fall off. It wasn’t chemicals.
This is a physical change because if it was chemical it would have something to do with science and water has nothing to do with chemicals so there is your answer

2C4H10 + 13O2 --> 8CO2 + 10H2O



Which is true about the reaction shown above?


The reaction has negative ions in two of the compounds that switch places.

The reaction releases energy.

The reaction is a single replacement.

The reaction has two elements that combine to form a compound.

Answers

Answer:

c

Explanation:

The answer is C: the reaction is a single replacement!

Which of the following is the best model to help explain how light behaves as it passes from air and then through a piece of transparent glass? Use evidence and scientific reasoning to support your answer. (It's very important)

Answers

The second one since when light is aimed towards transparent glass it does not reflect back to you, and you cannot see it through the glass.

The correct image that shows how the light behaves as it passes from air and then through a piece of transparent glass is second one, because, the light ray will refract or bend when passing to other medium with a different density.

What is refraction ?

Refraction is the bending of light as it passes from one medium to another with a different density. The change in the speed of light as it moves from one medium to another causes the bending of the light, resulting in a change in its direction.

The amount of bending depends on the angle at which the light enters the new medium, as well as the difference in the refractive indices of the two media.

Refraction occurs when light passes through materials such as air, water, or glass, and it is responsible for a variety of optical phenomena, such as the way that lenses focus light to create images, the formation of rainbows, and the apparent bending of objects viewed through a glass of water.

Hence, the second image is correctly representing refraction.

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Which example is most likely made from both metals and gemstones?

necklace
soda can
window frame
kitchen utensil

Answers

The answer is A necklace there is no other answer that would make any sense
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A carpenter needs to be sure that a frame he has built is rectangular. He knows that the opposite sides of his frame are congruent. Which additional fact would be sufficient to prove that the frame is a rectangle? A) If two adjacent angles are supplementary, then the frame must be rectangular. cross out B) If the adjacent sides are also congruent, then the frame must be rectangular. cross out C) If opposite angles are congruent, then the frame must be rectangular. cross out D) If one angle is a right angle, then the frame must be rectangular Can someone please answer this No, a child with type B blood would not be the result of two parents with type A blood regardless of the genotypes because with type A blood there's only Type A antigens.True or False five strategies that the school can implement to act against cyber bullying In what ways do Hitlers ideas reveal the dangers of nationalism? Explain how the nucleotides dATP, dCTP, dGTP and dTTP serve both as a substrate and an source of energy for DNA polymerase. Consider all five-digit numbers that can be created from the digits 0-9 0 - 9 where the first and last digits must be odd and no digit can repeat. What is the probability of choosing a random number that starts with 7 7 from this group? Enter a fraction or round your answer to 4 4 decimal places, if necessary. In each of the following four cases, MRP L and MRP C refer to the marginal revenue products of labor and capital, respectively, and P L and P C refer to their prices. Indicate in each case whether the conditions are consistent with maximum profits for the firm. If not, state which resource(s) should be used in larger amounts and which resource(s) should be used in smaller amounts.a. MRPL = $8; PL = $4; MRPC = $8; PC = $41. These conditions are consistent with maximum profits for the firm. True or False2. Which resource should be used in larger and/or smaller amounts?a- Use less of bothb. Conditions are already consistentc. Use more of bothd. Use less labor and more capitale. Use more labor and less capitalb. MRPL = $10; PL = $12; MRPC = $14; PC = $91. These conditions are consistent with maximum profits for the firm. True / False2. Which resource should be used in larger and/or smaller amounts?a- Use less of bothb- Conditions are already consistentc- Use more of bothd- Use less labor and more capitale- Use more labor and less capitalc. MRPL = $6; PL = $6; MRPC = $12; PC = $12 Aquaculture has increased in the past twenty years. What are some items that are commonly farmed in aquaculture What describes natural rights? 1. Shippers package in order to (fill in the blank) the material. Shippers package in order to contain the materials safely and for drivers to load, transport, and unload.2. Driver placard their vehicle to (fill in the blank) the risk.Drivers placard their vehicle to Communicate the risk.3. What three things do you need to know to decide which placards (if any) you needMaterial's hazard classAmount being shippedAmount of all hazardous materials of all classes on your vehicle A closed pipe creates afundamental frequency of 125 Hz.What is the next higher frequencythat will create a standing wave inthe pipe?(Speed of sound = 343 m/s)(Unit = Hz) PLEASE HELP WILL MAKE BRAINLIEST ! > fill in the blanks Summarize how a freshwater ecosystem, such as a pond, can change into a terrestrial ecosystem. 3. Set up the simulation in the following manner. a) On the Data tab, check all boxes except those of the red lionfish and the crown-of-thorns starfish. b) Zoom out from the graph by clicking on the minus sign () on the right side of the graph. Continue clicking the minus sign until the graph shows 100 years on the x-axis. c) On the Conditions tab, set the storm severity to 20%, ocean temperature to 27C, and ocean pH to 7.6. d) Run the simulation. e) Take a snapshot of your graph, and then copy and paste it into the space below. Stacey files as head of household with two dependents. She has AGI of $123,000 for 2020. She incurred the following expenses and losses during the year: Medical expenses before the 7.5%-of-AGI limitation $15,575 State and local income taxes 7,200 State sales tax 1,400 Real estate taxes 2,800 Home mortgage interest 5,900 Credit card interest 1,100 Charitable contribution 2,400 Casualty loss before 10% limitation (after $100 floor; not in a Federally declared disaster area) 8,300 Unreimbursed employee expenses 5,500Calculate Stacey's allowable itemized deductions for the year. The equation y=19(1.057)x represents book sales in billions of dollars since 1990. Let x represent the number of years. Let x = 0 represent book sales in 1990. What were the total sales, in billions of dollars, in 2010? Can you help me with this According to the text, what are some of the multiple factors that make up an audience-centered speaker The fluid-filled interior compartment of the thylakoid network is referred to as the:A. cytoplasm.B. intermembrane space.C. lumen.D. grana.E. stroma.