Year 7 MC Revision

Which one of the following is not permitted in the Science laboratory?

• Eating.

• Running.

• Sitting on practical benches.

• All of the above.

Which of the following is a different substance (contains different types of particles) to the others?

• Water

• Ice

• Steam

• Air

Which process would be the most suitable for collecting drinking water from seawater?

• Sedimentation

• Distillation

• Centrifugation

• Chromatography

When separating living things into groups, the most useful features will be those that:

• are hard to identify (like the number of teeth a shark has).

• change over time (like length of hair).

• do not change over time (like number of legs).

• the living things have in common (like are made of cells).

Laboratory rules are based on:

• common sense.

• international regulation.

• the scientific method.

• Einstein’s ‘Theory of Laboratories’.

Matter is anything that:

• is solid.

• can be seen.

• has mass and takes up space.

• takes the shape of its container.

What equipment is associated with separating two liquids of different boiling points?

• Watchglass and beaker.

• Evaporating basin and beaker.

• Separating funnel.

• Condenser.

A microscope has an eyepiece lens with a magnification of 10x and an objective lens with a magnification of 40x. What would be the magnification of an object observed using this microscope?

• 50x

• 30x

• 100x

• 400x

If a chemical gets in your partner’s eye during an experiment, you should first:

• Use a clean cloth to wipe the eye.

• Cover the eye.

• Flood the eye with water and alert the teacher.

• Ensure safety glasses are worn next time.

Which of the following are difficult to compress?

• Solids and liquids

• Solids and gases

• Liquids and gases

• Solids only