Liquids Review (Unit 2)

State what happens to the pressure in a liquid as depth increases.

• The pressure will increase as depth increases.

• The pressure will increase as depth decreases.

• The pressure will get lower than before.

• The pressure will increases if the volume decreases.

The picture shows a small fish in deep water. The fish is not moving. The water is not moving.

The arrows A, B, and C show three directions from which pressure from the water acts on the fish.

Which statement is correct?

• The pressure in direction A is the largest.

• The pressure in direction B is the largest.

• The pressure in direction C is the largest.

• The pressure is equal in all directions. 

The picture show water coming out of three holes in a bottle. 

Describe the conclusion that can be made from this observation.

• The higher pressure is in the bottom of the plastic bottle.

• The bottle has liquids with no pressure

• The pressure increase when more as depth of liquids

• The top is the highest pressure of liquids

Felicia makes some sugar.

It is important that the sugar is very pure.

What is meant by a pure substance?

• The pure substance contains other chemical contaminants.

• Pure substance contains more than one substance

• Pure substance only contains of one substance

• None of them.

Felicia makes 13.0 g of solid.

The solid contain 10.1 g of sugar.

What is the percentage purity of sugar in the solid?

Use the equation shown.

Percentage purity = Mass of useful product2atotal mass of solid   x 100

Percentage purity = ……………………%

• 80 %

• 7.78 %

• 77.7 %

• 70.7 %

Milo investigates some sugar solutions.

He dissolves mass of sugar in solution 3.0 g/100 cm3

Calculate the concentration of the solution if the volume is 20 cm3

Concentration = …………………………………… g/100 cm3

• 0.100 g/100cm³

• 30g/100cm³

• 15g/100cm³

• 15g/cm³

An area of a cup is 12 cm² and it is exerted a force 120 Newton.

Calculate the pressure!

• 100 N/m²

• 10 N/m²

• 0.10 N/m²

• 10 N