Cycle 1 Review

A __________ is made up of two or more elements chemically bonded together in a fixed ratio.

• Compound

• Mixture

• Element

• Solution

Air is an example of a ________________ mixture because it looks uniform throughout.

• Homogeneous

• Heterogeneous

• Colloidal

• Suspension

Which of the following is a heterogeneous mixture?

• Kool-Aid

• Orange juice with pulp

• Salt water

• Vinegar

Which statement is true about elements?

• They can be broken down into simpler substances by physical means.

• They consist of only one type of atom.

• They always exist as mixtures.

• They are made of two or more types of atoms.

Water climbing up a thin glass tube is an example of __________ action.

• Capillary

• Osmotic

• Diffusion

• Adhesive

Water molecules sticking to the sides of a container is called __________.

• Adhesion

• Cohesion

• Evaporation

• Condensation

Which property allows insects like water striders to stand on water?

• Adhesion

• Surface tension

• Evaporation

• Capillary action

Which process in plants relies on both cohesion and adhesion?

• Photosynthesis

• Water transport through xylem

• Cellular respiration

• Pollination

1. The symbol "Cl" represents the element __________.

• Chlorine

• Calcium

• Carbon

• Copper

In chemical equations, capital letters like "C" or "O" stand for __________.

• elements

• compounds

• reactions

• molecules