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Science Chemistry Yr 8; Part 1

Description

A science quiz on chemical changes, physical changes and atoms
ScarletFox
Quiz by ScarletFox, updated more than 1 year ago
ScarletFox
Created by ScarletFox almost 10 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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