7029501
Description
Quiz by Jeffrey Piggott, updated more than 1 year ago
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Created by Jeffrey Piggott
about 8 years ago
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Question 1
Question
Complete the general chemical equations below by selecting the correct choice from each drop-down menu:
1. METAL + WATER --> ALKALI + [blank_start]HYDROGEN[blank_end]
2. METAL + ACID --> [blank_start]SALT[blank_end] + HYDROGEN
3. ACID + CARBONATE --> SALT + [blank_start]CARBON DIOXIDE[blank_end]
4. ACID + ALKALI --> SALT + [blank_start]WATER[blank_end]
Answer
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HYDROGEN
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CARBON DIOXIDE
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WATER
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SALT
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WATER
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CARBON DIOXIDE
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CARBON DIOXIDE
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HYDROGEN
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OXYGEN
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CARBON DIOXIDE
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WATER
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HYDROGEN
Question 2
Question
Balance the following chemical equation:
[blank_start]2[blank_end]HgO→ [blank_start]2[blank_end]Hg + O2
Answer
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2
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2
Question 3
Question
What is the balanced equation for: ___ SnO₂ + ___ H₂ → ___ Sn + ___ H₂O?
Answer
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2 SnO₂ + 2 H₂ → 2 Sn + H₂O
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SnO₂ + 2 H₂ → Sn + 2 H₂O
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SnO₂ + H₂ → Sn + 2 H₂O
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2 SnO₂ + H₂ → 2Sn + H₂O
Question 4
Question
What is the symbol for potassium?
Answer
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P
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K
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Po
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Pt
Question 5
Question
What is the formula for potassium hydroxide?
Answer
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KOH
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KOh
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NaOH
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K(OH)2
Question 6
Question
What is the name of the salt made in the chemical reaction between zinc metal and hyrochloric acid (HCl) ?
Answer
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zinc hydrate
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zinc chloride
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chloric zinc
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This reaction does not make a salt.
Question 7
Question
Complete the following acid-metal reactions:
1. copper (s) + sulfuric acid (hydrogen sulfate) (aq) --> [blank_start]copper sulfate[blank_end] (s) + hydrogen (g)
2. aluminium (s) + nitric acid (hydrogen nitrate) (aq) --> [blank_start]aluminium nitrate[blank_end] + hydrogen (g)
Answer
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copper sulfate
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aluminium nitrate
Question 8
Question
Complete these single displacement reactions:
1. zinc (s) + copper chloride (aq) --> [blank_start]zinc chloride[blank_end] (aq) + [blank_start]copper[blank_end] (s)
2. potassium (s) + sodium chloride (aq) --> [blank_start]potassium chloride[blank_end] (aq) + [blank_start]sodium[blank_end] (s)
3. sodium (s) + copper sulfate (aq) --> [blank_start]sodium sulfate[blank_end] (aq) + [blank_start]copper[blank_end] (s)
Answer
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zinc chloride
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zinc copper
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zinc
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copper
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zinc
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chloride zinc
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potassium chloride
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potassium sodate
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potassium sulfate
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sodium
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potassium
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chlorine
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sodium sulfate
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copper sodate
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sulfur sodide
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copper
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sulfur
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sodium
Question 9
Question
Complete the following double displacement reactions:
1. sodium hydroxide + aluminum nitrate ---> [blank_start]sodium nitrate[blank_end] + [blank_start]aluminum hydroxide[blank_end]
2. magnesium bromide + potassium carbonate ---> [blank_start]magnesium carbonate[blank_end] + [blank_start]potassium bromide[blank_end]
Answer
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sodium nitrate
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nitrate aluminium
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aluminum hydroxide
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hydroxide sodium
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magnesium carbonate
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bromide potassium
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potassium bromide
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carbonate magnesium
Question 10
Question
What are substances on the left side of a chemical equation called?
Answer
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electrons
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groups
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products
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reactants
Question 11
Question
What are substances on the right side of a chemical equation called?
Answer
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electrons
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groups
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products
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reactants
Question 12
Question
Can the subscripts in a chemical reaction be changed?
Answer
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Never
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Sometimes, depending on the energy released
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Yes, to balance the equation.
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Cannot be determined.
Question 13
Question
16.05 g of methane reacts completely with 64.00 g of oxygen to form carbon dioxide and water. What will be the total mass of the CO2 and H2O produced?
Answer
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16.05 g
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64 g
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80.05 g
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the total mass cannot be determined with certainty, because the reaction could be exothermic or endothermic.
Question 14
Question
What is a limiting reactant?
Answer
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a reactant that is found in excess in a chemical reaction
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a reactant that is not present
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a reactant that will be consumed completely during a reaction
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none of the above
Question 15
Question
When the equation below is balanced, the coefficient in front of carbon dioxide is C3H8 + O2 -> CO2 + H2O:
Answer
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1
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12
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3
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6
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