WorksheetsPhysical/Chemical Change
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
Which physical property is commonly used to test the purity of substance
a)
density
b)
color
c)
conductivity
d)
hardness
2.
What is a compound
a)
smallest unit of matter
b)
substance that cannot be broken down into simpler substances
c)
mixture of two or more substances in an unfixed proportion
d)
substance made from 2 or more simpler substances in fixed proportion
3.
Which of the following is NOT a physical property
a)
denisty
b)
boiling point
c)
flammability
d)
conductivity
4.
Salt water is an example of a(n)
a)
compound
b)
element
c)
solution
d)
heterogeneous mixture
5.
When can you be certain that a change is a chemical change
a)
when there is a visible change
b)
when the change is irreversible
c)
when the temperature changes
d)
when a new substance is formed
6.
What is viscosity
a)
speed at which a liquid flows
b)
ratio of a liquid's mass to its volume
c)
tendency of a liquid to resist flowing
d)
pureness of a liquid
7.
During which of the following processes does a physical change occur
a)
squeezing juice from an orange
b)
baking cookies in an oven
c)
copper penny corroding with time
d)
old milk souring
8.
Which of the following is NOT a common type of evidence for a chemical change
a)
explosion
b)
color change
c)
gas produced
d)
precipitate formed
9.
Which of the following can be separated with a filter
a)
colloids
b)
compounds
c)
homogeneous mixtures
d)
suspensions
10.
Any characteristics that can be observed without changing the composition of the substance is called
a)
physical property
b)
chemical property
c)
compound property
d)
homogeneous property
11.
You can be certain that a change is a chemical change if
a)
change cannot be reversed
b)
new substance form
c)
bubbles are produced
d)
there is a color change
12.
During which of these events does a chemical change occur
a)
paper clip is bent
b)
cake rise in the oven
c)
ice cubes melt
d)
pot of water boils
13.
All pure substances
a)
contain only one type of atom
b)
can be broken down into simpler substances
c)
have a variable composition
d)
have a fixed composition
14.
Which property can be used to separate a mixture of distillation
a)
melting point
b)
boiling point
c)
viscosity
d)
conductivity
15.
Which of these substances is not an element
a)
water
b)
aluminum
c)
hydrogen
d)
iron
16.
An ice cube is places in the sun, turns to a puddle of water, the puddle is gone
a)
physical change
b)
chemical change
17.
Two chemical are mixed together and a gas is produce
a)
physical change
b)
chemical change
18.
A bicycle changes color as it rusts
a)
physical
b)
chemical
19.
A solid is crushed to a powder
a)
physical
b)
chemical
20.
Two substances are mixed and light is produced
a)
physical
b)
chemical
21.
You leave your bicycle out in the rain and it rust
a)
physical
b)
chemical
22.
A sugar cube dissolves
a)
physical
b)
chemical
23.
Scientist break-up water into hydrogen and oxygen gas
a)
physical
b)
chemical
24.
Burning coal for a barbeque
a)
physical
b)
chemical
25.
Trimming a bush because it has grown too tall
a)
physical
b)
chemical
26.
A student removes a loaf of bread from the oven, cuts a slice and spreads butter on it
a)
physical
b)
chemical
27.
In baking biscuits, baking powder reacts to release carbon dioxide bubbles, and the dough rise
a)
physical
b)
chemical
28.
You take out your silver spoons and notice that they are very dull and have black spots
a)
physical
b)
chemical
29.
You blow dry your wet hair
a)
physical
b)
chemical
30.
In a firework show, the firework explode giving off heat and light
a)
physical
b)
chemical
31.
When matter undergoes a physical change, the composition of the matter changes
a)
true
b)
false
32.
color change, production of gas, and formation are the three types of evidence for chemical change
a)
true
b)
false
33.
oxygen is more reactive than nitrogen
a)
true
b)
false
34.
Two common separation methods are heterogeneous and homogonized
a)
true
b)
false
35.
An element has a fixed composition because it contains only one type of atom
a)
true
b)
false
36.
The properties of a mixture can vary because the compound of a mixture is fixed
a)
true
b)
false
37.
solutions, suspensions, and colloids are classified as elements
a)
true
b)
false
38.
if an object is malleable, it can be hammered and not shatter
a)
true
b)
false
39.
Physical properties are used to identify material, choose material for a specific purpose, or separate the substance in a mixture
a)
true
b)
false
40.
A rusty chain is less likely to break than a new chain because rust is stronger than iron
a)
true
b)
false
100 %
