C2 Basic building Materials Quiz

CaCl₂ is an example of

• a metal.

• a phase.

• a compound.

• an element.

Which statement is not a description of a chemical reaction?

• Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker.

• A solid is dropped into a beaker of liquid and an explosion occurs.

• A liquid is heated on a Bunsen burner and its temperature rises.

• A solid is dropped into a beaker of liquid and a gas is released.

Suppose you pour nitric acid on some copper powder in a test tube. A brown gas is produced and a light blue liquid is all that remains in the test tube. What happened to the copper atoms?

• They are now in the light blue liquid as copper atoms.

• They are now in the light blue liquid as copper ions.

• They escaped as part of a brown gas.

• They were destroyed by the acid.

The copper cycle, shown, is a demonstration of what principle of chemistry?

• Most elements are metallic solids.

• Elements exist as gases, liquids, or solids.

• Mass is conserved in chemical reactions.

• Metals are excellent conductors.

At room temperature, most of the elements in the periodic table are

• gases.

• metalloids.

• solids.

• nonmetals.

Which of these describes barium’s location on the periodic table?

• Group 3A, Period 2

• Group 2, Period 3A

• Group 2A, Period 6

• Group 6, Period 2A

What is the correct ordering of the groups from left to right in the periodic table?

• noble gases, alkali metals, alkaline earth metals, halogens

• alkaline earth metals, alkali metals, halogens, noble gases

• alkali metals, noble gases, alkaline earth metals, halogens

• alkali metals, alkaline earth metals, halogens, noble gases

Which pairs of elements would you expect to have the most similar properties?

• arsenic, As, and silicon, Si

• fluorine, F, and chlorine, Cl

• nitrogen, N, and oxygen, O

• hydrogen, H, and helium, He

Which of these elements would you expect to have the greatest reactivity?

• boron, B

• gold, Au

• argon, Ar

• barium, Ba

What is the correct way to represent a solution of copper (II) nitrate?

• Cu(aq)

• Cu(NO₃)₂ (aq)

• Cu(s)

• Cu(NO₃)₂ (s)