Chapter 6 Matter Revision

Identify the parts X, Y and Z.

• X: filtrate
  Y: mixture
  Z: residue

• X: mixture

  Y: residue
  Z: filtrate

• X: residue

  Y: mixture

  Z: filtrate
  

• X: mixture

  Y: filtrate

  Z: residue

What is evaporation?

• It is the process of changing steam into water droplets by directing steam onto a cool surface.

• It is the change of liquid water into vapour on the surface.

• It occurs by melting ice into water and heating it to 100 °C to produce water vapour.

• It is the process that occurs only when water is heated to its boiling point.

Henry added some soil to water. However the soil did not dissolve after some time.

What is the most likely reason why this happened?

• He added too much soil.

• He did not heat the soil and water mixture.

• He did not stir the soil in water.

• Soil is not soluble in water.

Mixture Z has the following properties:

1. 1. light cannot pass through the mixture completely

2. 2. solid particles settle at the bottom when it is left to stand

Mixture Z is most likely a ___________.

• acids

• solution

• suspension

• alkalis

The solubility of a substance in water is ___________________________.

• the greatest amount of substance that can be dissolved in a given volume of  water

• the greatest amount of substance that can be dissolved in any volume of water

• the least amount of substance that can be dissolved in a given volume of water

• the least amount of substance that can be dissolved in any volume of water

Which of the following are solids?

• chalk

• steam

• oxygen

• mercury

• diamond  

Which of the following are liquids?

• milk

• paper

• oxygen

• mercury

• nitrogen

Which of the following are gases?

• steam

• oil

• oxygen

• iron

• nitrogen

Oil has a density of 0.91 g/cm³.

 If an object of density of 1.20 g/cm³ is placed in oil, the object will __________ as the density of the object is __________ than density of oil.

Water has a density of 1.00 g/cm³.

 If an object of density of 0.50 g/cm³ is placed in oil, the object will __________ as the density of the object is __________ than density of oil.