Chemical Reaction (8th grade)

In an endothermic reaction, heat is

• Absorbed

• Released

In an exothermic reaction, heat is

• Absorbed

• Released

In an endothermic reaction, the temperature of the surrounding environment will

• Increase

• Decrease

n an exothermic reaction, the temperature of the surrounding environment will

• Increase

• Decrease

What is meant by physical change?

• A new chemical substance is formed

• Change in the state of matter

What is meant by chemical change?

• A new chemical substance is formed

• The change in the state of matter

What is the chemical reaction for RUSTING?

• Metal + Oxygen -> metal oxide

• Iron + Oxygen --> Carbon dioxide + water

• Iron + Oxygen --> Iron oxide

• Lithium + Oxygen -> Lithium oxide

Which of these reactions means "reacting with oxygen"?

• Burning

• Oxidation

• Rusting

• Corrosion

Methane (CH4) is burned, what are the products?

• Methane oxide

• Carbon dioxide

• Water

• Oxygen

__________ + _________ --> Magnesium Oxide. Tick all the reactants

• Magnesium

• Metal

• Water

• Oxygen