Chemical reactions

magnesium + oxygen -> magensium oxide

Select the product of this reaction

• magnesium

• oxygen

• magnesium oxide

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

magnesium + oxygen -> magnesium oxide

Select the reactants for the reaction.

• magnesium only

• oxygen only

• magnesium oxide only

• magnesium and oxygen

Tags

NGSS.MS-PS1-2

Using the picture only, write down one sign that a chemical reaction has taken place.

Tags

NGSS.MS-PS1-2

In respiration oxygen combines with glucose to make carbon dioxide and water. Select the correct word equation for this reaction.

• carbon dioxide + water -> glucose + oxygen

• carbon dioxide + oxygen -> water + glucose

• oxygen + glucose -> carbon dioxide + water

• glucose + water -> carbon dioxide + oxygen

Tags

NGSS.MS-LS1-3

NGSS.MS-LS2-3

Select which of these examples is NOT a sign of a chemical reaction.

• Change of state

• Change of temperature

• Change of colour

• Change of energy

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction is ...

• ...irreplaceable.

• ...irreversible.

• ...irresponsible.

• ...ireparable.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select the incorrect statement.

• In a chemical reaction new compounds are made.

• In a chemical reaction compounds are broken down.

• In a chemcal reaction compounds change.

• In a chemical reaction the compounds do not change.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select the correct example of a chemical reaction.

• Boiling water

• Melting chocolate

• Freezing ice cream

• Burning wood

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

At the end of a chemical reaction new .......... are made.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical reaction energy is needed to ...

• ...make bonds.

• ...break bonds.

• ...keep bonds.

• ...save bonds.

Tags

NGSS.HS-PS1-4