Science 5- Midterm Reviewer

Alanna investigates the amount of dissolved solids in tap water.

She heats two different samples of tap water to dryness.

Alanna measures the mass of solid left behind.

What variable should be controlled/kept the same?

• mass of dissolved liquid

• type of dissolved solids

• time of heating

• volume of tap water

Tags

NGSS.MS-ETS1-1

Alanna investigates the amount of dissolved solids in tap water.

She heats two different samples of tap water to dryness.

Alanna measures the mass of solid left behind.

What is the DEPENDENT variable?

• mass of dissolved liquid

• type of dissolved solids

• time of heating

• volume of tap water

Alanna investigates the amount of dissolved solids in tap water.

She heats two different samples of tap water to dryness.

Alanna measures the mass of solid left behind.

What is the DEPENDENT variable?

• mass of dissolved liquid

• type of dissolved solids

• time of heating

• volume of tap water

Kris wants to investigate the saturation of 50 grams of Milo chocolate powder to a 300 ml of water.

What equipment should he use to measure 50 grams of Milo powder?

• beaker

• ruler

• scale

• measuring cylinder

Aubrey dissolves 2 tablespoons of powdered milk in a mug of hot water.

Which is the solvent?

What do you call of a solid that can be dissolved in solvents like water?

• saturated

• solvent

• mixture

• soluble

Dissolving is a reversible process.

What process is needed to separate salt from a salt solution?

• magnetism

• evaporation

• condensation

• filtration

Coffee can be dissolved in water. This mixture is called a ......................

• saturated

• insoluble

• solution

• soluble

What are the TWO forces acting on the picture?

• gravity

• upthrust

• buoyancy

• friction

Tags

NGSS.3-PS2-1

NGSS.5-PS2-1

Name the force that slows her down while sliding.