CHS Year 8 Progress test 2

What is chromatography used for?

• Separating mixtures of coloured compounds

• Mixing different liquids

• Measuring gas pressure

• Changing solids to liquids

What is the function of mitochondria?

• The organelle where respiration happens

• The organelle where photosynthesis happens

• The organelle where digestion happens

• The organelle where protein synthesis happens

What causes gas pressure in a container?

• Gas particles colliding with the walls

• Gas particles moving away from the walls

• Gas particles staying still

• Gas particles dissolving in the walls

In chromatography, why is a pencil used to draw the line on the paper?

• Because it dissolves in the solvent

• Because it does not dissolve in the solvent

• Because it changes color

• Because it is cheaper than ink

How is magnification calculated in a microscope?

• Magnification = eyepiece x objective

• Magnification = eyepiece + objective

• Magnification = eyepiece - objective

• Magnification = eyepiece / objective

What is contained in chloroplasts that is essential for photosynthesis?

• Cellulose

• Chlorophyll

• Protein

• Starch

What is the process called when cells change into specialized cells?

• Diffusion

• Photosynthesis

• Differentiation

• Respiration

What is the formula for speed?

• SPEED = TIME / DISTANCE

• SPEED = DISTANCE / TIME

• SPEED = DISTANCE x TIME

• SPEED = TIME x DISTANCE

What type of force is caused by two objects rubbing together?

• Air resistance

• Reaction

• Friction

• Thrust

What is the force due to gravity called?

• Mass

• Weight

• Volume

• Density