Year 7 Chemistry Revision

Recall the name of this object.

• Conical flask

• Evaporating dish

• Measuring cylinder

• Test tube

Recall the name of this object.

• Beaker

• Measuring cylinder

• Conical flask

• Test tube

Recall the name of this object

• Beaker

• Test tube

• Measuring cylinder

• Conical flask

Recall the name of this object.

• Conical flask

• Evaporating dish

• Measuring cylinder

• Test tube

Recall the name of this object.

• Conical flask

• Evaporating dish

• Measuring cylinder

• Test tube

Recall the best description for a mixture.

• Made up of only one substance

• Two or more substances chemically joined

• Two or more substances that can be easily separated

• A number of different substances mixed together but not chemically joined

Salt water is water that has salt dissolved in it. Identify the term to describe the water.

• Aquifer

• Solute

• Solution

• Solvent

Explain how you know when a solution is saturated.

• The solution is full of fat

• The solute stops dissolving

• The solution stops being clear

• The solvent stops evaporating

Identify the physical property of water.

• Water is H₂O

• Water reacts with iron to form rust

• Water is a clear, colourless liquid at 25^oC

• Water and sulfuric acid can react violently with each other

Identify the best discription of what happens to the particle when a liquid evaporates and becomes a gas.

• The particles change from liquid particles to gas particles

• The particles change from one substance into another

• The particles move so fast that they can break free of the liquid

• The particles move slower and are not as close to each other