Chemical Reactions Quiz

Descripción

Chemical Reactions quiz for Stage 9 Cambridge Secondary 1.
Jeffrey Piggott
Test por Jeffrey Piggott, actualizado hace más de 1 año
Jeffrey Piggott
Creado por Jeffrey Piggott hace alrededor de 8 años
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3

Resumen del Recurso

Pregunta 1

Pregunta
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]
Respuesta
  • HYDROGEN
  • CARBON DIOXIDE
  • WATER
  • SALT
  • WATER
  • CARBON DIOXIDE
  • CARBON DIOXIDE
  • HYDROGEN
  • OXYGEN
  • CARBON DIOXIDE
  • WATER
  • HYDROGEN

Pregunta 2

Pregunta
Balance the following chemical equation: [blank_start]2[blank_end]HgO→ [blank_start]2[blank_end]Hg + O2
Respuesta
  • 2
  • 2

Pregunta 3

Pregunta
What is the balanced equation for: ___ SnO₂ + ___ H₂ → ___ Sn + ___ H₂O?
Respuesta
  • 2 SnO₂ + 2 H₂ → 2 Sn + H₂O
  • SnO₂ + 2 H₂ → Sn + 2 H₂O
  • SnO₂ + H₂ → Sn + 2 H₂O
  • 2 SnO₂ + H₂ → 2Sn + H₂O

Pregunta 4

Pregunta
What is the symbol for potassium?
Respuesta
  • P
  • K
  • Po
  • Pt

Pregunta 5

Pregunta
What is the formula for potassium hydroxide?
Respuesta
  • KOH
  • KOh
  • NaOH
  • K(OH)2

Pregunta 6

Pregunta
What is the name of the salt made in the chemical reaction between zinc metal and hyrochloric acid (HCl) ?
Respuesta
  • zinc hydrate
  • zinc chloride
  • chloric zinc
  • This reaction does not make a salt.

Pregunta 7

Pregunta
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)
Respuesta
  • copper sulfate
  • aluminium nitrate

Pregunta 8

Pregunta
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)
Respuesta
  • zinc chloride
  • zinc copper
  • zinc
  • copper
  • zinc
  • chloride zinc
  • potassium chloride
  • potassium sodate
  • potassium sulfate
  • sodium
  • potassium
  • chlorine
  • sodium sulfate
  • copper sodate
  • sulfur sodide
  • copper
  • sulfur
  • sodium

Pregunta 9

Pregunta
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]
Respuesta
  • sodium nitrate
  • nitrate aluminium
  • aluminum hydroxide
  • hydroxide sodium
  • magnesium carbonate
  • bromide potassium
  • potassium bromide
  • carbonate magnesium

Pregunta 10

Pregunta
What are substances on the left side of a chemical equation called?
Respuesta
  • electrons
  • groups
  • products
  • reactants

Pregunta 11

Pregunta
What are substances on the right side of a chemical equation called?
Respuesta
  • electrons
  • groups
  • products
  • reactants

Pregunta 12

Pregunta
Can the subscripts in a chemical reaction be changed?
Respuesta
  • Never
  • Sometimes, depending on the energy released
  • Yes, to balance the equation.
  • Cannot be determined.

Pregunta 13

Pregunta
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?
Respuesta
  • 16.05 g
  • 64 g
  • 80.05 g
  • the total mass cannot be determined with certainty, because the reaction could be exothermic or endothermic.

Pregunta 14

Pregunta
What is a limiting reactant?
Respuesta
  • a reactant that is found in excess in a chemical reaction
  • a reactant that is not present
  • a reactant that will be consumed completely during a reaction
  • none of the above

Pregunta 15

Pregunta
When the equation below is balanced, the coefficient in front of carbon dioxide is C3H8 + O2 -> CO2 + H2O:
Respuesta
  • 1
  • 12
  • 3
  • 6
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