chemical reaction y.7

A substance produced during a chemical reaction

• Product

• Reactant

• Properties

In a chemical reaction,

• no new substance is formed

• a new substance is formed

• products and reactants have the same properties

• reactants are not needed

How many total atoms are in this compound? Al₂O₃

• 2

• 5

• 6

• 3

How many F atoms are in this compound?

MgF₂

• 2

• 6

• 8

• 12

What are Chemical Reactions?

• It's when you mix substances.
• a process in which atoms rearrange to form new substances
• When something bubbles.
• letter and numbers showing the types and number of atoms

An ending substance that is made during a chemical reaction is called

• Reactant
• Product
• Atom
• Molecule

The starting substances of a chemical reaction is called

• products
• substances
• reactants

a copper penny turning greenish after a few years.

• Chemical Change
• Physical Change

In a ___________change, a substance changes into a different substance.

• Physical
• Chemical

Which is an example of a chemical change?

• Burning wood

• Cooking food

• Rust on a car

• All of the above