Question
Looking at the periodic table, determine the charge of Sodium (Na) will make when it bonds with other atoms.
a
-1
b
-2
c
+1
d
-6
e
+6
f
+2
a
-1
b
-2
c
+1
d
-6
e
+6
f
+2
Answers
Answer
Question 21
Which event is an example of an exothermic reaction?
a
melting ice
b
combustion
c
decomposition
d
evaporation
Which event is an example of an exothermic reaction?
a
melting ice
b
combustion
c
decomposition
d
evaporation
Answer
One molecule of Iodine (I2) and two molecules of sodium chloride (NaCl) combine in a reaction. How many atoms are in the products?
a
4
b
3
c
2
d
6
a
4
b
3
c
2
d
6
Answer
Balance the following the chemical equation:
C2H6 + O2 → CO2 + H2O
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C2H6 + O2 → CO2 + H2O
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