Vocabulary
Chemical equations
Reaction Types
Balancing
Misc.
100
What is a chemical equation?
Symbols and formulas that show what compounds are reacting and which are being produced
100
What are the products and what are the reactants in the following chemical equation? HCl + NaOH --> NaCl + H
2
O
Reactants: HCl and NaOH Products: NaCl and H
2
O
100
Ca + NaCl --> CaCl
2
+ Na is what type of reaction?
single-replacement
100
FeBr
3
+ Na --> Fe + NaBr Balance this equation
FeBr
3
+ 3Na --> Fe + 3NaBr
100
If a chemical reaction produces water, does it
ALWAYS
mean it was a combustion reaction?
No
200
Which of these is
NOT
diatomic? N
2
, H
2
, S
2
, O
2
S
2
200
When balancing a chemical equation, you can change the subscripts of the compounds. True of False?
False
200
What is the generic equation for a decomposition reaction?
AB --> A + B
200
Balance the following chemical reaction. C + S
8
--> CS
2
4C + S
8
--> 4CS
2
200
When we put an element by itself in a chemical equation, we must include a charge. True or False?
False
300
2CH
4
The four in this chemical equation is called a what?
subscript
300
Ca
3
(PO
4
)
2
What are the two ions in this compound and how many of each ion are there?
Ca: 3 PO
4
: 2
300
What are
ALWAYS
the two products of a combustion reaction?
CO
2
and H
2
O
300
Balance the following chemical equation. Fe + H
2
O --> Fe
2
O
3
+ H
2
2Fe + 3H
2
O --> Fe
2
O
3
+ 3H
2
300
The higher up on the activity series list, the (more/less) active the element is.
more
400
If you see a "(aq)" in a chemical equation, what does this mean?
aqueous (dissolved in water)
400
Which is
NOT
a way to tell if a chemical reaction has occured? heat, color, smell, bubbles
Smell
400
What happens in a double replacement reaction?
The ions from each compound switch partners
400
Balance the following chemical equation. NaOH + HCl --> NaCl + H
2
O
Already balanced
400
If Ni is higher up on the activity series than Cu, which will end up in the compound as a product?
Ni
500
The word "synthesis" means to ___________________.
combine
500
When we balance a chemical equation, which law are we enforcing?
Law of conservation of mass
500
HCl + NaOH --> NaCl + H
2
O is what type of reaction?
Double-replacement
500
Balance the following chemical reaction Al(OH)
3
+ H
2
CO
3
--> Al
2
(CO
3
)
3
+ H
2
O
2Al(OH)
3
+ 3H
2
CO
3
--> Al
2
(CO
3
)
3
+ 6H
2
O
500
Which is the most reactive element? Al, Mg, Rb, or H
2
Rb
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