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podryga [215]
3 years ago
9

How would you describe (explain the differences) solids, liquids, and gases to a 4th grader? Be clear please.

Chemistry
2 answers:
musickatia [10]3 years ago
8 0
A solid is an object that has definite shape, volume, and mass. This means that the shape, volume, and mass will never change.

A liquid is something that has definite volume and mass, but it does not have definite shape because a liquid is the shape of its container.

A gas <span>does not have a definite shape, mass, or <span>volume because a gas is able to spread around.</span></span>
seropon [69]3 years ago
6 0
A liquid is something like water. A gas is something like gasoline a solid is something like a brick
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Match each number to how it would appear in scientific notation.
Verdich [7]
A. 8,330 --> 8.33 × 10^3
B. 83.3 --> 8.33 × 10^1
C. 0.00833 --> 8.33 × 10^-3
D. 0.0833 --> 8.33 × 10^-2
E. 83,330 --> 8.33 × 10^4

Hope this helps!
4 0
3 years ago
Read 2 more answers
I need help fast!! Djdndndndndndnnds
adell [148]

Answer:

1st one: carbon dioxide

2nd: Glucose

3rd: Oxygen

4th: Energy

Sorry if this is wrong because I don't see the options!

Hope this helps!

6 0
3 years ago
Sulfuric acid was once produced through the reaction of sulfur trioxide with water. Sulfur trioxide can form through the reactio
vekshin1

Answer 1) In the given reaction of sulfuric acid


2NO_{(g)} + O_{2}_{(g)} ---->  2NO_{2}_{(g)}


2NO_{2}_{(g)} + 2SO_{2}_{(g)} ---->  2NO}_{(g)} + 2SO_{3}_{(g)}


On addition of nitrogen monoxide gas the reaction rate increases and more amount of product is formed.


So, it is clear that NO is the catalyst in this reaction.


Answer 2) This can be proven that NO is catalyst because it increases the rate of the reaction, but it is not consumed during the reaction, and it also gets regenerated at the end of reaction.


Hence, nitrogen mono oxide is considered as the catalyst in the given reaction.


Answer 3) It increases the rate of reaction by decreasing the activation energy of the reaction. Also it can be clearly seen in this reaction the NO is reacting with oxygen to lower the energy of activation. So, it is providing an alternative pathway for proceeding the reaction. This all confirms the assumptions of NO being the catalyst.


2NO_{(g)} + O_{2}_{(g)} ---->  2NO_{2}_{(g)}

4 0
3 years ago
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The difference between kinetic and potential energy is
Travka [436]

Answer:   Kinetic Energy is already moving and is not at rest. Potential Energy is purely based on the position of the object and also the condition of the object.

Explanation: hope this helps

7 0
3 years ago
Atmospheric pressure yesterday was given as 0.875 atm. Express this pressure in units of torr and also in kilopascals (kPa), res
Aneli [31]
This problem is about conversion and dimensional analysis. Important information to know:
 1 atm = 760 torr = 101.325 kPa

For atm to torr conversion:

0.875 atm * (760 torr / 1 atm) = 665 torr

For atm to kPa conversion:

0.875 atm * (101.325 kPa / atm) = 88.7 kPa

Thus the answer is b) 665 torr and 88.7 kPa
5 0
3 years ago
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