🚪 Exit Ticket 🎟️ - T9 Lesson 5 Using Dissolving to Identify an

What was the result of the demonstration comparing the amount of salt and sugar dissolved in water?

• More sugar was left undissolved.

• More salt was left undissolved.

• Both dissolved equally.

• Neither dissolved.

Tags

NGSS.MS-PS1-2

What is the term used to describe how well a substance dissolves in water?

• Density

• Solubility

• Viscosity

• Conductivity

Why do different substances have different solubilities?

• They have the same molecular structure.

• They are made up of different ions or atoms.

• They are all chemically identical.

• They have the same density.

What should students notice about each crystal in the activity?

• Only the color

• Only the weight

• Shape, size, and transparency

• Only the temperature

What conclusion should students reach about the identity of the unknown substance?

• They have enough evidence to identify it.

• They do not have enough evidence to identify it.

• It is definitely salt.

• It is definitely sugar.

In the cereal demonstration, what was the conclusion about the amount of cereal in each cup?

• The crushed cereal has more mass.

• The un-crushed cereal has more mass.

• Both have the same amount of cereal.

• The crushed cereal has less mass.

Why does crushed cereal take up less space than un-crushed cereal?

• It has more mass.

• It has less volume.

• It is denser.

• It is lighter.

What is the main reason water molecules interact differently with different substances?

• Water molecules are all the same.

• Substances are chemically different.

• Water molecules are attracted to heat.

• Substances have the same solubility.

What is the purpose of using dissolving to identify an unknown?

• To measure temperature

• To determine density

• To identify chemical properties

• To find the weight

What is the key factor that affects how substances dissolve in water?

• Temperature

• Chemical composition

• Color

• Weight

Tags

NGSS.MS-PS1-4