Chemistry Test Part 2

This image shows what happens when methane gas (CH₄) is burned (reacts with oxygen O₂). Which of the following is a reactant?

• Methane (CH₄)

• Water (H₂O)

• Carbon dioxide (CO₂)

• none of the above

Tags

NGSS.MS-PS1-2

Is bending copper wire a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

Is melting butter a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-4

Any time something burns, it is going through a

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

A mixture is the result of a physical change because...

• The parts can be separated

• A new substance is made

• There is a chemical reaction

• One part of the mixture disappears

A copper penny turning green after a few years is an example of ...

• Chemical Change

• Physical Change

Tags

NGSS.MS-PS1-2

The substances that go into a chemical reaction are called

• reactants

• products

• molecules

• mixtures

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The end results of a chemical reaction are called

• products

• reactants

• explosion

• a pile of goo

Tags

NGSS.MS-PS1-5

This image shows what happens when methane gas (CH₄) is burned (reacts with oxygen O₂) to produce carbon dioxide and water. Which of the following is a product?

• methane (CH₄)

• oxygen (O₂)

• carbon dioxide (CO₂)

• none of the above

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A chemical reaction is balanced when

• both sides have the same elements
• Both sides have the same  number of atoms
• Same subscripts
• Same coefficients

Tags

NGSS.MS-PS1-5