Chemical Reactions and Matter

Physical or Chemical Change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Physical or Chemical Change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

Physical or Chemical Change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Physical or Chemical Change?

• Physical

• Chemical

Tags

NGSS.MS-PS1-2

What does the Law of Conservation of Mass state?

• Matter is not created or destroyed in any chemical or physical change.

• Chemical and physical changes can create or destroy matter but not at the same time.

• Matter can be created in chemical changes only.

• Mixtures combined create new matter.

Tags

NGSS.MS-PS1-5

What happened to the atoms in a piece of wood that was burned?

• They are bonded differently, but some of the atoms were burned and destroyed in the fire.

• They are bonded differently, but all of the atoms are still there.

• All of the atoms were destroyed in the fire.

• The atoms in the wood moved really fast and then stopped moving forever.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student placed the fruit in a tightly sealed bag and found the mass of the fruit every week for seven weeks. If the apple had a mass of 102 grams in week 1 (first picture), what would the mass of the apple be in week 7 (last picture)?

• 95 g

• 714 g

• 102 g

• 109 g

Tags

NGSS.MS-LS1-5

An Alka-Seltzer tablet, which has a mass of 16 grams, is put in 160 grams of a solution. A chemical reaction takes place and a gas is produced. The final mass of the mixture is 170. What is the mass of the gas released?

• 16 g

• 160 g

• 170 g

• 6 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In physical or chemical reactions, atoms are NOT created or destroyed, they are only __________ to form new substances.

• missing

• sad

• rearranged

• added

Tags

NGSS.MS-PS1-5

What are the three ways the Periodic Table is organized?

• Families

  Groups

  Shells

• Families

  Groups

  Periods

• Groups

  Periods

  Shells

• None of them