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Concept Check
Naming & Writing Ionic Compounds
Naming & Writing Molecular Compounds
Chemical Reactions
Writing & Balancing Chemical Equations
100

What colour does Bromothymol Blue (BTB) turn a substance when it is an acid? 

Yellow

100
Name the following compound: LiF. Why is it an ionic compound?
Lithium Fluoride It is an ionic compound because the first part of the name is a metal ion whereas the second part of the name is a non-metal ion.
100
Name the following compound: CO. Why is it a molecular compound?
Carbon monoxide. It is a molecular compound because both parts of the name are non-metals.
100

What are two ways to tell that a chemical reaction has occurred?

1) change in energy 2) change in colour (products is different colour from reactants) 3) gas is formed (bubbles, odour) 4) precipitate is formed (solid subtance when two clear solutions are mixed)

100

Name the diatomic elements. (Hint: "diatomic 7")

1) hydrogen 2) nitrogen 3) oxygen 4) fluorine 5) chlorine 6) bromine 7) iodine

200
What is the term used for substances that react together in a chemical reaction?
Reactants
200
Write the chemical formula for calcium chloride.
CaCl(2)
200

What kind of bond do molecular compounds have? 

Covalent Bond (Sharing of electrons)

200

How is incomplete combustion different from complete combustion?

Incomplete Combustion also has soot (C) and Carbon Monoxide (CO) as products.

200
Write the following word equation as a chemical formula: sodium chloride ----> sodium + chlorine
NaCl ----> Na + Cl(2)
300
Identify the information listed for the element beryllium: a) symbol b) atomic number c) number of protons d) number of electrons
a) Be b) 4 c) 4 d) 4
300
Write the chemical formula of aluminum oxide.
Al(2)O(3)
300
Write the chemical formula of sulfur dioxide
SO(2)
300
What type of reaction is this? copper + silver nitrate ----> silver + copper nitrate
Single displacement reaction
300
Balance the following equation: ___ K + ___ Br(2) ----> ___ KBr
2 K + Br(2) ----> 2 KBr
400

State the Law of Conservation of Mass.

The mass of the reactants is equal to the mass of the products.

400
Name the following compound: NaBr
Sodium bromide
400
Write the chemical formula for carbon tetrachloride.
CCl(4)
400
What type of chemical reaction is this? Water ----> hydrogen + oxygen
Decomposition reaction
400

Balance the following chemical equation: ___ S + ___ O(2) ----> ___ SO(3)

2 S + 3O(2) ----> 2 SO(3)

500

Bases tend to have a high concentration of what ions? 

Hydroxide ions (OH) 

500
Write the chemical formula of potassium sulfide.
K(2)S
500
Name the following compound: NO. Is this a molecular compound?
Nitrogen monoxide. Yes it is a molecular compound because both nitrogen (N) and oxygen (O) are non-metals.
500
How can you turn NaCl ----> Na + Cl (a decomposition reaction) into a synthesis reaction?
Flip it. Na + Cl ----> NaCl
500

Balance the following chemical equation: ___ As + ___ O(2) ----> ___ As(2)O(5) What type of reaction is this?

4 As + 5 O(2) ----> 2 As(2)O(5) This is a synthesis reaction.