Matter and Chemical Change Unit Review

Describe the movement of molecules as a substance changes from gas to liquid.

• The speed of the decreases because they have higher kinetic energy in the liquid state.

• The speed of the molecules increases because they have higher kinetic energy in the liquid state.

• The speed of the molecules decreases because they have lower kinetic energy in the liquid state.

• The speed of the molecules increases because they have lower kinetic energy in the liquid state.

Elements in this category have similar chemical properties. Select two answers.

• families

• periods

• groups

• transition

Horizontal rows on the periodic table are called _____.

• transition

• groups

• periods

• families

Vertical columns on the periodic table are called _____. Select two answers.

• transition

• groups

• periods

• families

Use your periodic table to determine which element contains 11 protons and 10 electrons.

• a neutral sodium ion

• an ion of sodium

• a neutral neon ion

• an ion of neon

Use your periodic table to determine which element contains 20 protons and 19 electrons.

• a neutral potassium ion

• an ion of potassium

• an ion of calcium

• a neutral calcium ion

Use your periodic table to determine which element contains 12 protons and 11 electrons.

• a neutral magnesium ion

• an ion of magnesium

• an ion of sodium

• a neutral sodium ion

Which two subatomic particles determine an atom's mass? Select two answers.

• protons

• electrons

• neutrons

• atomic number

Which subatomic particle determines the identity of an atom?

• protons

• electrons

• neutrons

• mass number

Which two subatomic particles can be found in an atom's nucleus? Select two answers.

• protons

• electrons

• neutrons

• mass number