Concept Check
Naming & Writing Compounds
Naming & Writing Compounds
Chemical Reactions
Writing & Balancing Chemical Equations
100
What is a chemical reaction?
A change in matter that produces new substances with new properties.
100

Name the following compound: LiF. 

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. 

Carbon monoxide. 

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

Is this an acid or a base: HBr? How do you know?

It is an acid. It has a hydrogen.

200

Predict whether a chemical reaction has occurred for the following process: Frying chicken. If yes, state the evidence.

Yes. Evidence: odour

200
Write the following word equation as a chemical formula: sodium chloride ----> sodium + chlorine
NaCl ----> Na + Cl(2)
300

What is acid precipitation? How does it occur?

Answer may vary

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

What are the products of a neutralization reaction?

Water and a salt

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
Identify the elements that make up the compound NaCl. How many atoms of each element are there?
Elements: Sodium (Na) and Chlorine (Cl). There is one atom of each.
500
Write the chemical formula of potassium sulfide.
K(2)S
500

Name the following compound: NO. Is this a molecular compound?

Nitrogen monoxide. 

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.
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