G8 PhysSci: End of Semester Review

Front

What are the columns in the periodic table called?

Back

Groups.

Front

What do elements in Group 2 of the periodic table tend to form?

Back

Ions with a +2 electric charge.

Front

How many types of atoms make up a particle of water?

Back

2 (hydrogen and oxygen).

Front

What do gray spheres represent in molecular models?

Back

Carbon atoms.

Front

What is the chemical formula for hydrogen peroxide?

Back

H2O2.

Front

What is the result of the reaction: 2KOH + H2SO4 → ?

Back

K2SO4 + 2H2O.

Front

What is the best way to tell samples of tin and aluminum apart?

Back

Measure their densities.

Front

What is the state of water at room temperature?

Back

Liquid.

Front

What is the atomic number of hydrogen?

Back

1.

Front

What is the process of a liquid turning into a gas called?

Back

Evaporation.