Chemistry NB Quiz (106-123)

What is the Law of Conservation of Mass?

• The mass of the product is double the mass of the reactants.

• Mass CANNOT be created or destroyed during ordinary physical or chemical reactions.

• The mass of the reactants and products are never the same.

• Mass CAN be created and destroyed during ordinary physical or chemical reactions.

Tags

NGSS.MS-PS1-5

In an EXOTHERMIC reaction, the energy is _________ from the system.

• Released

• Absorbed

Answer explanation

The prefix "EXO" means “outside,” “outer,” or “external.”

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

In an ENDOTHERMIC reaction, the energy is _________ from the system.

• Released

• Absorbed

Answer explanation

The prefix "ENDO-" means “within.”

Tags

NGSS.HS-PS1-4

Select ALL the evidence of Chemical Change below

• Unexpected color change

• Formation of bubbles

• Change in state

• Unexpected temperature change

Answer explanation

Tags

NGSS.MS-PS1-2

Select ALL the evidence of Physical Change below

• Change in State

• Expected change of color

• Combustion/Burning

• Change in size, shape, or texture

Answer explanation

What type of mixture separation would you use to take advantage of the physical property of states of matter?

• Magnetic Separation

• Filtration

• Mechanical Separation

• Decanting

Tags

NGSS.MS-PS1-4

If a substance is not pure (not solely an element or a compound) it is called a __________.

• Compound

• Element

• Mixture

• Solution

In a ___________ mixture, all the parts mix in together so well that it’s hard to tell the parts apart.

• Homogeneous Mixture

• Heterogeneous Mixture

Answer explanation

Use the Bohr Model in the photo to identify this element.

• Lithium

• Carbon

• Nitrogen

• Oxygen

Tags

NGSS.MS-PS1-1

How many electrons (e-) does this atom have?

• 14

• 13

• 27

• 1

Answer explanation

Electrons are the subatomic particles that orbit the nucleus!

Tags

NGSS.MS-PS1-1