WorksheetsPhysical and Chemical Properties and Changes
Total questions: 20
Worksheet time: 25mins
Name
Class
Date
1.
Water (H₂O) is made of (contains) ________ and ___________.
a)
Hydrogen and oxygen
b)
carbon and oxygen
c)
hydrogen and carbon
d)
no elements
2.
7.Your friend decides to toast a piece of bread, but leaves it in the toaster too long. The bread is black and the kitchen if full of smoke.
a)
physical change
b)
chemical change
3.
In a fireworks show, the fireworks explode giving off heat and light.
a)
physical change
b)
chemical change
4.
Which of the following tells you that a chemical change may have occurred?
a)
change shape
b)
melting
c)
bubbles forming
d)
freezing
5.
12. What happens in ALL chemical changes?
a)
change in state of matter
b)
bubbles are produced
c)
a new substance is formed/atoms rearrange
d)
nothing
6.
Which of the following IS a clue that a chemical change has occurred?
a)
state of matter change
b)
change in temperature
c)
size change
d)
shape change
7.
What helps us to identify substances?
a)
Sherlock Holmes
b)
combining them with metals
c)
properly writing lab reports
d)
observing their properties
8.
If there is a change in color, production of light, production of heat, production of gas, production of smell or formation of a new substance.
a)
physical change
b)
chemical change
9.
Which of the following is an example of a physical change?
a)
Baking a cake
b)
Rusting iron
c)
Burning wood
d)
Melting ice
10.
What is the main difference between a physical and a chemical change?
a)
Physical changes create new substances
b)
Chemical changes are reversible
c)
Chemical changes involve the rearrangement of atoms
d)
Physical changes involve the rearrangement of atoms
11.
Which of the following indicates a chemical reaction has taken place?
a)
Change in state
b)
Change in shape
c)
Change in size
d)
Formation of a precipitate
12.
A change in the shape of an object is an example of _________________.
a)
a chemical change
b)
energy
c)
an endothermic change
d)
a physical change
13.
In a ___________change, a substance changes into a different substance.
a)
Physical
b)
Chemical
14.
A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?
a)
cutting a piece of paper
b)
folding a piece of paper
c)
tearing a piece of paper
d)
burning a piece of paper
15.
Boiling Water
a)
Physical Change
b)
Chemical Change
16.
Evidence of a physical change.
a)
New substance
b)
Shape Change
c)
Light produced
d)
Gas released.
17.
Melting a chocolate bar?
a)
Physical Change
b)
Chemical Change
18.
Two or more atoms chemically bonded together are called a
a)
atom
b)
element
c)
molecule
d)
mixture
19.
How many elements are there in C3O2?
a)
1
b)
2
c)
3
d)
4
20.
What are the basic building blocks for all matter?
a)
atoms
b)
elements
c)
compounds
d)
chemicals
100 %
