2025 Chemistry Unit 6 Test

Based on magnesiums's position in the periodic table, what is the most likely charge of a magnesium ion?

• -1

• -7

• +2

• +1

What is the name of the anion formed when chlorine gains an electron?

• chlorite

• chlorate

• chloride

• perchlorate

What is the charge on an phosphorus ion?

• -3

• -2

• +2

• +3

What type of ion is formed when an atom gains an electron?

• positive

• negative

• neutral

• polyatomic

A compound has the formula X₂Y. For every 10 X atoms present in this compound, how many Y atoms are there?

• 45

• 5

• 3

• 15

What is a regular, repeating arrangement of atoms, ions, or molecules called?

• amorphous

• compound

• crystal

• polyatomic

Which category of elements has the properties of being both malleable and ductile?

• metalloids

• nonmetals

• metals

• gases

Which of these particles are involved in chemical reactions between atoms?

• protons

• inner electrons

• valence electrons

• neutrons

The formula for iron(IV) oxide is FeO₂. How many iron atoms are in one formula unit of iron(IV) oxide?

• 1

• 2

• 3

• 4

Check all the characteristics of an ionic compound.

• generally solid at room temperature

• liquid at room temperature

• conducts electricity as a solid

• conducts electricity when dissolved in a liquid

• magnetic