Science Chemistry Yr 8; Part 1

Descrição

A science quiz on chemical changes, physical changes and atoms
ScarletFox
Quiz por ScarletFox, atualizado more than 1 year ago
ScarletFox
Criado por ScarletFox mais de 10 anos atrás
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Resumo de Recurso

Questão 1

Questão
Which of the following are physical changes?
Responda
  • Dying hair
  • Boiling water
  • Chopping wood

Questão 2

Questão
Changing a solid into a gas is called...?
Responda
  • Solidification
  • Deposition
  • Sublimation

Questão 3

Questão
Condensation is when...
Responda
  • 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

Questão 4

Questão
Dissolving is when a solid is dissolved into liquid.
Responda
  • True
  • False

Questão 5

Questão
You can detect when a chemical change has occurred when...
Responda
  • Colour Change
  • Gas Formation (Bubbles or smell)
  • New substance being formed
  • Heat or Light is produced
  • Dissolves

Questão 6

Questão
Endothermic Change...
Responda
  • 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

Questão 7

Questão
Everything is made from...
Responda
  • Cells
  • Molecules
  • moving light particles

Questão 8

Questão
Particles move faster because of heat and they need more room to cool down.
Responda
  • True
  • False

Questão 9

Questão
A solvent is...
Responda
  • The liquid in a solution
  • The solid dissolving in the solution

Questão 10

Questão
Density is the weight of an object.
Responda
  • True
  • False

Questão 11

Questão
Density is found by...
Responda
  • Dividing Mass by Volume
  • Dividing Volume by Mass
  • Multiplying Mass by Volume

Questão 12

Questão
Ethanol is denser than water.
Responda
  • True
  • False

Questão 13

Questão
Molecules are made up from...
Responda
  • Cells
  • Atoms
  • More molecules

Questão 14

Questão
Water is made up from 2 hydrogen atoms and 1 oxygen atom
Responda
  • True
  • False

Questão 15

Questão
All chemical reaction equations have 2 reactants and 1 or more products.
Responda
  • True
  • False

Questão 16

Questão
Magnesium Sulfate and Hydrogen Gas are products made from the reactants of...
Responda
  • Hydrogen and Magnesium
  • Sulfuric Acid and Oxygen
  • Magnesium and Sulfuric Acid

Questão 17

Questão
Spontaneous Reactions are reactions that proceed by themselves.
Responda
  • True
  • False

Questão 18

Questão
Rusting is the name given to...
Responda
  • Corrosion of iron
  • Corrosion of steel
  • A dog

Questão 19

Questão
Ways of preventing rusting are...
Responda
  • Coating
  • Alloying
  • Galvanising
  • Painting

Questão 20

Questão
You can write chemical reaction equations in...
Responda
  • Words
  • Symbols
  • Numbers

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