Physical and Chemical Changes

Descrição

Quiz sobre Physical and Chemical Changes, criado por za4321 em 15-11-2014.
za4321
Quiz por za4321, atualizado more than 1 year ago
za4321
Criado por za4321 aproximadamente 10 anos atrás
194
8

Resumo de Recurso

Questão 1

Questão
Why do chemical changes occur?
Responda
  • When the atoms and molecules of substances change or react with one another
  • When atoms and molecules react chemically against a compound

Questão 2

Questão
Give three examples of chemical changes
Responda
  • Freezing, rusting, melting
  • Photosynthesis, rusting, baking

Questão 3

Questão
True or False: Burning a sugar cube is a chemical change
Responda
  • True
  • False

Questão 4

Questão
True or False: Chemical Changes happen on a much smaller scale
Responda
  • True
  • False

Questão 5

Questão
You can cause physical changes with forces like...?
Responda
  • Temperature, Force, Motion
  • Force, Motion, Gravity
  • Temperature, Gravity, Motion

Questão 6

Questão
True or False: During a physical change new materials are formed
Responda
  • True
  • False

Questão 7

Questão
Physical Changes involve....
Responda
  • Changes of state, color, appearance, shape, texture, size and form
  • Changes of temperature, force and gravity

Questão 8

Questão
During a chemical change....
Responda
  • Chemical bonds are formed between the materials
  • No chemical bonds are formed between the materials

Questão 9

Questão
True or False: Chemical Changes are hard to reverse
Responda
  • True
  • False

Questão 10

Questão
Is energy released during physical changes?
Responda
  • No
  • Yes
  • Only during changes of state

Questão 11

Questão
How are compounds formed during chemical reactions?
Responda
  • When chemical reactions occur, creating the compound and it's components
  • When chemical bonds are formed between the elements

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