WorksheetsFirst GP Recap 2020
Total questions: 30
Worksheet time: 26mins
Which is an example of chemical change?
Melting ice
Chopping celery
Baking a cake
Bending a straw
The word “luster” refers to which property of matter?
The ability to conduct electrical or thermal energy
Capable of being drawn out into thin wires
The way a surface appears when it reflects light
Suitable for being shaped by beating or rolling
Which of the following is typically a good conductor of heat, malleable and ductile ?
Metal
Nonmetal
Metalloid
Elements that have properties of both metals and
nonmetals; sometimes referred to as
semiconductors.
Metals
Non metals
Metalloids
Conductivity
When two liquids are mixed and a solid forms as a result of a reaction, the solid is called a
color change
precipitate
gas bubble
salt
Which of these is NOT a sign that a chemical change has occurred?
Change in state of matter.
An unexpected color change
A temperature change
The formation of a precipitate
Na2CO3
How many elements are in this compound?
B6Cl2OH
4
3
2
1
This picture represents which of the following?
mixture
compound
element
water drops
Which of these models can be described as a compound?
water
carbon dioxide
amonia
methane
All of them are compounds
diagram "b" is an example of a(n)
element
compound
mixture
diagram "c" is an example of a(n)
element
compound
mixture
diagram "d" is an example of a(n)
element
compound
mixture
This picture is a model of...
an element
a compound
a homogenious mixture
a heterogeneous mixture.
What does the model represent ?
An element
A compound
A mixture
What is the evidence of a chemical change when baking soda is added to vinegar ?...
color change
gas bubbles form
light is produced
nothing, it is a physical change
What does the model represent ?
element
mixture
compound
