Grade 9 Chemistry Review

Classifications of Matter

1

The smallest particles that still have unique properties and cannot be split any smaller has been given this name.

What is an element?

1

When two or more types of elements are bonded together

What is a compound?

2

The two types of compounds.

What are ionic and covalent compounds

2

The forces between particles are relatively weak for this state of matter.

What is gas?

3

Steel, apple juice, and air are all examples of this type of mixture.

What is a solution/homogeneous mixture?

Physical & Chemical Properties and Changes

1

Aluminum is pounded into thin sheets to make aluminum foil you use in cooking. This represents this physical property.

What is malleability?

1

Mixing two clear and colourless liquids gives a bright yellow and opaque liquid, which hints at this type of change.

What is a chemical change?

2

A gas changing to a liquid is called condensation. This process is this type of change.

What is a physical change?

2

Burning wood at a campfire is this type of chemical reaction

What is combustion?

3

This is the technical term of a solid that forms during a chemical change.

What is a precipitate?

Atomic Structure and Drawings

1

The number of electrons that are in the first shell

Two

1

The subatomic particles found in the nucleus.

Protons and Neutrons

2

The number of electrons that can be in the 3rd shell.

8

2

The Lewis diagram for all the Alkali Earth metals should have this many dots around the element symbol.

What is 2?

3

The terms for electrons in the outermost shell

What are valence electrons?

Periodic Table

1

On the periodic table for any element, you can often find the atomic number, atomic mass, the name of the element, and this.

What is the atomic symbol?

1

Alkali metals are found in this group number.

What is Group 1?

2

Metals and non-metals are separated on the periodic table by these elements that have properties of both metals and non-metals.

What are metalloids?

2

Group 17 goes by this name.

What is a halogen?

3

The element that is named after Plumbum.

Lead

Miscellaneous

1

This group of neutral elements have a full stable octet, and they go by this name.

What are noble gases?

1

If an ion has 25 protons, 30 neutrons and 19 electrons, the ion has this charge.

What is +6?

2

Name a chemical property of matter.

What is reacts with oxygen?

2

***DOUBLE JEOPARDY*** Carbon will form bonds with this number of Chlorine atoms.

What is 4?

3

The symbol for Gold.

What is Au?