Open Scied 7.6

When a substance breaks down into particles inside a liquid it is called

• melting

• dissolving

• solubilizing

• chemical change

Tags

NGSS.MS-PS1-2

This would be an example of

• particles in a substance

• particles in a mixture

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-1

Which are considered evidence that carbon dioxide gas is produced when a bath bomb is added to water? Select all that apply.

• The gas extinguishes a flame.

• The gas does not extinguish a flame.

• The gas is less dense than air.

• The gas is more dense than air.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Where is the gas that is produced by a bath bomb NOT coming from?

• a bath bomb added to water

• a crushed up bath bomb

• pockets of air or gas within the bath bomb

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

According to our labs and investigations, which statements are true so far?

• When a bath bomb is added to water, the ingredients dissolve and produce gas bubbles.

• The bath bomb itself does not produce gas without water.

• The bath bomb contains pockets of gas trapped inside which are released when added to water.

• Lemonade powder contains citric acid, which is needed to produce the gas.

• Citric acid and baking soda in water produce the gas bubbles, which may be made of carbon dioxide gas.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which term is an example of a chemical property?

• Boiling point

• State of matter

• Flammability

• Color

Tags

NGSS.MS-PS1-5

Which is the best evidence for a chemical change?

• The substance dissolves.

• Fizzing and bubbling

• Absence of color change

• The solid melts.

Tags

NGSS.MS-PS1-2

If we are doing an experiment to see how much a warming light shining on a cup will affect how fast the cup warms up what is the INDEPENDENT VARIABLE?

• temperature change of the water

• amount of light

• amount of water in the cup

• material of the cup

Tags

NGSS.MS-PS1-4

If we are doing an experiment to see how the amount of light shining on a cup affects how fast the water warms up, what would be the DEPENDENT VARIABLE?

• amount of light

• amount of water in the cup

• temperature change of the water

• material of the bottle

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A particle's speed is related to how much __ it has.

• gravitational energy

• kinetic energy

• potential energy

• elastic energy

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-1