Chemical Reactions

True or false? Chemical reactions are easily reversible

• True

• False

Tags

NGSS.HS-PS1-6

True or false: A change in state is a chemical reaction

• True - something melting would be an example of a chemical reaction

• False - a change in state is a physical change

Tags

NGSS.MS-PS1-4

In a word equation, the starting chemicals are called...

• reactants

• products

• ingredients

Tags

NGSS.MS-PS1-5

In this chemical reaction, which is the product/s?

Magnesium + Oxygen --> Magnesium oxide

• magnesium

• magnesium and oxygen

• magnesium oxide

• oxygen

Tags

NGSS.MS-PS1-1

A material that burns to transfer energy is called a...

• compound

• wood

• fuel

• petrol

What is the scientific term given when something burns?

• a fuel

• flammable

• combustion

• heating

What does a fuel need in order to burn?

• fuel

• electricity

• oxygen

• hydrogen

When energy is transferred from the substances to the surroundings during a chemical reaction, what type of reaction is this?

• endothermic

• exothermic

• decomposition

• combustion

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

In an endothermic reaction is energy transferred to the surroundings or to the substances?

• surroundings

• substances

Tags

NGSS.HS-PS1-4

In a chemical reaction, the temperature is measured and it appears to increase. Is this an example of an exothermic or endothermic reaction?

• exothermic

• endothermic

Tags

NGSS.MS-PS3-4