Chemistry 1st Six Weeks Intervention_RM

Chemistry 1st Six Weeks Intervention_RM

Multiple Choice

Chlorine is a highly reactive element. It tends to gain one electron to become more stable. How does gaining one electron make chlorine more stable?

• A. Stability is increased with greater mass.

• B. Mobility is reduced in atoms with extra electrons.

• C. The outer energy level becomes the same as a noble gas.

• D. The most stable ratio of electrons to protons is achieved.

Multiple Choice

Which set of elements have chemical properties similar to those of phosphorus?

• A. nitrogen, arsenic, and antimony

• B. carbon, selenium, and iodine

• C. silicon, sulfur, and germanium

• D. silicon, sulfur, and chlorine

Multiple Choice

Which three elements are arranged according to increasing

electronegativity values?

• N, C, B

• N, P, As

• N, O, F

• F, O, N

Multiple Choice

Missy and Ethan discussed examples of the types of changes in matter. In which example is a chemical change taking place?

• A. A piece of metal is cut in half.

• B. An ice cube melts on a counter.

• C. A camper roasts marshmallows over a burning fire.

• D. A baker mixes together flour and sugar to make dough.

Multiple Choice

Which is a chemical change?

• A. the melting of the wax

• B. the burning wick of the candle

• C. the sugar dissolving in the tea

• D. the steam coming from the tea