Open Scied 7.1

What happens when a bath bomb is added to water? Select all statements that are true.

• When a bath bomb is added to water, it dissolves and breaks down into particles.

• When a bath bomb is added to water, it does not change.

• When a bath bomb is added to water, fizzing and bubbling show a gas is produced.

• When a bath bomb is added to water, a new state of matter is formed from the particles.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How can we explain another phenomenon, like elephant toothpaste, where gas bubbles appear after combining different substances together?

• Combining different substances may result in forming something new, even inside a closed system.

• Combining different substances forces one of the substances to change to a gas.

• Combining different substances may result in particles rearranging and interacting in different ways.

Tags

NGSS.MS-PS1-2

Which describes solubility best?

• how well a substance can change into a liquid

• how well a substance can dissolve in a liquid

Which are possible evidence of a gas being produced? Select all that apply.

• fizzing

• color change of the liquid

• bubbles

• a new sound or odor

Tags

NGSS.MS-PS1-2

List the steps of the scientific method

d

e

f

c

b

a

Draw conclusions

Communicate results

Analyze results

Conduct experiment

Form a hypothesis

Ask a question

Tags

NGSS.MS-LS1-5

How can particles of a new substance be formed out of particles of an old substance?

• Particles may break apart and rejoin in different ways, forming a substance with a new identity.

• Particles get smashed up and disappear, and new particles pop up.

Tags

NGSS.MS-PS1-1

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

What gas is produced by the bath bomb in water?

• The gas produced by the bath bomb in water is argon.

• The gas produced by the bath bomb in water is helium.

• The gas produced by the bath bomb in water is carbon dioxide.

• The gas produced by the bath bomb in water is nitrogen.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Where is the gas coming from when a bath bomb is added to water?

• When a bath bomb is added to water, a gas is produced from new matter that was somehow added to a closed system (sealed bottle).

• When a bath bomb is added to water, a gas is produced from matter that was already inside the closed system (sealed bottle).

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which combination of substances in a bath bomb in water produce the gas?

• Citric acid

• Cornstarch

• Baking soda

• Epsom salts

• Sugar

Tags

NGSS.MS-PS1-2