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Y7 Chapter 4 Structure and properties of materials
Authored by Joel Wong
Science
7th Grade
Used 16+ times
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35 questions
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1.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Are the elements in a mixture chemically bonded together?
True
False
Answer explanation
There is no chemical bonds in a mixture. Chemical bonds are found in compounds
2.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Evaporation is when a ______________ turns into a ______________________
Liquid ; Gas
Gas ; Liquid
Solid ; Liquid
Liquid ; Solid
3.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Condensation is when a ______________ turns into a ______________________
Liquid ; Gas
Gas ; Liquid
Solid ; Liquid
Liquid ; Solid
4.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Melting is when a ______________ turns into a ______________________
Liquid ; Gas
Gas ; Liquid
Solid ; Liquid
Liquid ; Solid
5.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
Freezing is when a _______________________ turns into a _____________________________
Liquid ; Gas
Gas ; Liquid
Solid ; Liquid
Liquid ; Solid
6.
FILL IN THE BLANKS QUESTION
10 mins • 1 pt
I am a mixture of two or more metals. I am stronger than pure metals. What am I?
(a)
Answer explanation
The different sizes of the atoms makes the layers distorted so they are harder than pure metals
7.
MULTIPLE CHOICE QUESTION
10 mins • 1 pt
A substance made up of atoms of two or more different elements joined by chemical bonds is called:
Element
Mixture
Pure substance
Compound
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