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1767714
Science Chemistry Yr 8; Part 1
Description
A science quiz on chemical changes, physical changes and atoms
Quiz by
ScarletFox
, updated more than 1 year ago
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Created by
ScarletFox
over 9 years ago
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Resource summary
Question 1
Question
Which of the following are physical changes?
Image:
Coloured_hair (image/jpg)
Answer
Dying hair
Boiling water
Chopping wood
Question 2
Question
Changing a solid into a gas is called...?
Answer
Solidification
Deposition
Sublimation
Question 3
Question
Condensation is when...
Answer
When a liquid is cooled enough to change from a liquid to a solid
When gas cools and becomes a liquid
When liquid is warmed and becomes a gas
Question 4
Question
Dissolving is when a solid is dissolved into liquid.
Answer
True
False
Question 5
Question
You can detect when a chemical change has occurred when...
Image:
Explosion_B (image/jpg)
Answer
Colour Change
Gas Formation (Bubbles or smell)
New substance being formed
Heat or Light is produced
Dissolves
Question 6
Question
Endothermic Change...
Answer
Absorbs energy from its surroundings. If it occurs in a test tube, the test tube will feel cold because the reaction absorbs heat from your skin.
Gives off energy in the form of heat, light & sound.
Gives you Frostbite
Question 7
Question
Everything is made from...
Answer
Cells
Molecules
moving light particles
Question 8
Question
Particles move faster because of heat and they need more room to cool down.
Answer
True
False
Question 9
Question
A solvent is...
Answer
The liquid in a solution
The solid dissolving in the solution
Question 10
Question
Density is the weight of an object.
Answer
True
False
Question 11
Question
Density is found by...
Answer
Dividing Mass by Volume
Dividing Volume by Mass
Multiplying Mass by Volume
Question 12
Question
Ethanol is denser than water.
Answer
True
False
Question 13
Question
Molecules are made up from...
Answer
Cells
Atoms
More molecules
Question 14
Question
Water is made up from 2 hydrogen atoms and 1 oxygen atom
Image:
Atom (image/jpg)
Answer
True
False
Question 15
Question
All chemical reaction equations have 2 reactants and 1 or more products.
Answer
True
False
Question 16
Question
Magnesium Sulfate and Hydrogen Gas are products made from the reactants of...
Answer
Hydrogen and Magnesium
Sulfuric Acid and Oxygen
Magnesium and Sulfuric Acid
Question 17
Question
Spontaneous Reactions are reactions that proceed by themselves.
Answer
True
False
Question 18
Question
Rusting is the name given to...
Image:
rust_on_metal (image/jpg)
Answer
Corrosion of iron
Corrosion of steel
A dog
Question 19
Question
Ways of preventing rusting are...
Answer
Coating
Alloying
Galvanising
Painting
Question 20
Question
You can write chemical reaction equations in...
Answer
Words
Symbols
Numbers
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