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Chemical and Physical Change Flashcards | StudBud
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Chemical and Physical Change
Chemical and Physical Change
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What do you know about chemical and physical change?
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Questions
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Answers
1
What is a physical change?
Change affecting the form of a chemical substance
A substance that increases the rate of a chemical reaction
A change form one state to another
The new substance formed at result of a chemical reaction
2
Reactant: a substance that is present at the _________ of a chemical reaction.
Middle
End
Beginning
3
A change from one state to another without a change in chemical composition is a phase change.
None of the above
I don't know
True
False
4
Which is not a characteristic of a physical change.
smoke
texture
size
shape
5
A law stating that atoms are not created or destroyed in a chemical reaction:
Law of conservation of mass / matter
chemical laws
Law of air
Newton's law of physics
6
What is this called: H
2
subscript
product
coefficent
7
Atoms are ___________ as chemical bonds are broken.
stay
bonded
changed
rearrange
8
A reactive is- Likely to go undergo a _________ reaction.
physical
chemical
phase
reactant
9
Two liquids that turn into a solid are precipitate?
I don't know
Maybe
True
False
10
WHat is the 4 called in 4x?
coefficent
law of conservation of mass/matter
products
subscript
11
What is it called if a substance is increasing the rate of a chemical reaction?
Products
Catalysis
Increaser
12
What happens after a the reactant goes through a chemical reaction?
Reactant
A precipate
A product
Catalysis
13
Which is a way of expressing information about the proportions of an atom?
Chemical formula/equation
Law of conservation of mass/matter
Physical formula/equation
