Conservation of Mass

In science, a law is:

• A rule governing what you are permitted to do.

• A generalization about how the physical universe works.

• A legal document that describes a rule of conduct.

• A statute enacted by a legislative body.

What is true of a substance with a lot of mass?

• It contains a lot of matter

• It has a large volume

• It has a high density

• It has a low frequency

Tags

NGSS.MS-PS3-1

The law of conservation of mass says substances can neither be _______ nor ___________.

• Built; torn down

• Blended together; separated

• Created; destroyed

• Condensed; extracted

Tags

NGSS.MS-PS1-5

How is weight different from mass?

• Weight changes depending on gravity; mass stays constant throughout the universe.

• Weight is measured in grams; mass is measured in newtons.

• Weight can be converted to energy; mass cannot.

• Weight is measured with a scale; mass is measured with a triple-beam balance.

Tags

NGSS.MS-PS2-4

Sodium and chlorine combine to form sodium chloride, or table salt. Sodium and chlorine are:

• Producers

• Products

• Reactionaries

• Reactants

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

When sodium and chlorine combine to form sodium chloride, sodium chloride is the:

• Originator

• Reactant

• Product

• Produce

Tags

NGSS.MS-PS1-2

4 grams of hydrogen and 32 grams of oxygen will combine to form:

• 36 grams of water

• 28 grams of hydroxide

• 32 grams of oxygen

• 36 grams of deuterium

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

In a chemical reaction, 4 grams of sodium must combine with how many grams of chlorine to produce 10 grams of table salt?

• 4 grams

• 6 grams

• 8 grams

• 10 grams

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

NGSS.MS-PS1-1

What was Antoine Lavoisier's contribution to the law of conservation of mass?

• He was the first person to think of it

• He was the first person to propose it in a scientific way

• He came up with a widely-read, precise description

• He was the first person to perform a chemical reaction

Tags

NGSS.MS-PS1-5

Which of the following describes a chemical reaction?

• Oxygen interacts with iron to form rust

• Ice melts into water

• Carbon dioxide freezes to make dry ice

• Rocks split apart over many years due to weathering

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2