WorksheetsPhysical and Chemical Changes Literacy Comprehension
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What are two main types of changes categorizing transformations in the world around us?
a)
Chemical and Biological changes
b)
Physical and Chemical changes
c)
Weathering and Erosion changes
2.
Explain the difference between physical changes and chemical changes
a)
Physical changes involve altering states of matter, while chemical changes result in new substance formation
b)
Physical changes involve changing colors, while chemical changes involve changing shapes
c)
Physical changes involve forming new substances, while chemical changes involve altering appearances
3.
Provide an example of a physical change mentioned in the article.
a)
Burning a piece of paper
b)
Tearing a piece of paper
c)
A firework exploding
4.
Give an example of a chemical change mentioned in the article.
a)
Cutting vegetables
b)
Mixing ingredients to bake cookies
c)
Melting ice cream
5.
What happens to the clay when it is molded into different shapes?
a)
It changes composition
b)
It turns into a liquid
c)
Its appearance changes, but it remains clay.
6.
What are some evidences of chemical changes? (Read carefully!!)
a)
Release of gas, formation of a precipitate, and release of energy
b)
Change in temperature and change in size
c)
Change in color and change in shape
7.
What is a precipitate, and what does its formation show?
a)
A solid substance formed when two clear solutions are mixed, including a chemical change
b)
A gas formed during a physical change, indicating a change in state
c)
A liquid formed during a chemical change, indicating a change in temperature
8.
Describe what happens when you mix baking soda and vinegar.
a)
It changes color and shape
b)
It turns into a solid and gives off a smell
c)
Bubbles of carbon dioxide gas form, indicating a chemical reaction
9.
Why are physical changes are usually reversible while chemical changes are often irreversible. (read carefully)
a)
Because physical changes change the state of matter, while chemical changes create a new substance
b)
Because physical changes involve changing appearances, while chemical changes involve changes in properties.
c)
Because physical changes do not involve the formation of new substances, while chemical changes do
10.
What happens when iron rusts?
a)
It changes color and shape
b)
It forms iron oxide and changes color
c)
It melts and turns into a liquid
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