Science 10 Unit A Review - Chemistry

The following elements are diatomic and are always written as ___  _{2  (2 atoms)}

C₁₂H₂₂O_{11  (s)}  is called

PbCl_{4 (s)}    is called

Balance this:   __ N₂  + ___  H₂ -->   ___  NH₃

Calcium carbonate is an ionic compound.

The image below is an example of

Molecular compounds are solids at room temperature and conduct electricity in solution.

dinitrogen monoxide is

The name for SO₄^2-    is 

The correct name for    H₂S  is  

The number of electrons that a phosphorus ion has is

What hazard is represented by this symbol?

Combustion requires ____  to occur and often produces a gas called __________.

A clue to a chemical change is

WHMIS stands for

The number of protons that a phosphorus ion has is

Ionic compounds can exist as solids, liquids and gases at room temperature.

Which of the following is FALSE about acids and/or bases?

Matter cannot be created or destroyed, only converted from one form to another. This is the law

Under the section that is labelled first aid measures there is info about

Single replacement reactions will start with one element and compound and then end with

When heat is released during a reaction, a _______ change has taken place.

The formula for diphosphorus tetraoxide is

The mole is equal to 

The number of protons that an atom of phosphorus has is

The formula for the acid below is

If the mass of the product CaSO_{4 (s)}  is 200.23 g  then  the mass of 

It is important that you wear personal protective gear in the science lab

What hazard is represented by this symbol?

The subatomic particles found in the nucleus are

Substance that is made of two or more types of atoms that cannot be separated by ordinary means

The scientist that described the atom as small spheres was