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Nostrana [21]
2 years ago
13

What is the difference between a physical and chemical change? (Use words reactants, products, atoms and molecules.)

Chemistry
1 answer:
jeka942 years ago
6 0

Answer:

A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.

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Put the substance in a 25 mL beaker.
kkurt [141]

Answer: 1. Liquid

2. oily

3. no (not a solid)

Explanation:

5 0
3 years ago
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If 22.5L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature. What is the new volume?2.A gas with a vol
kykrilka [37]

Answer:

a)23.2 L

b)68.3kPa

c)7.5 atm

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e)1.67 atm

Explanation:

From Boyle's law:

P1V1=P2V2

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b)

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P2= P1V1/V2= 205×10^3×4/12

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c)

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d)

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e)

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4 0
3 years ago
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Answer:

1

Explanation:

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2 years ago
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the transfer of microorganisms is based on the transfer of genetic data through conductive pathways that penetrate the membranes, called pili or genetic bridges.

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3 years ago
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собак гандонов в гавне))))))))))

Explanation:

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