Reacting Metals With Acids

Question 1

Zinc is obtained by “reducing” zinc oxide, explain what this means.

Answer 1

Using a more reactive element to remove the oxygen from the zinc

Question 2

What factors influence the different uses of metals in various applications?

Answer 2

Their uses are linked to how they react with water, oxygen and acids

Question 3

How is the reactivity of metals determined?

Answer 3

Their reactivity is determined by how easily they form ions (how easily they lose electrons )

Question 4

Put these elements in order of reactivity (more reactive first):
Sodium, potassium, calcium, magnesium, iron, lithium

Answer 4

Potassium, sodium, lithium, calcium, magnesium, iron

Question 5

How does potassium react when placed in water and how does it react when placed in acid? (2 points)

Answer 5

• potassium in water= bursts into flame
• potassium in acid= extremely explosive

Question 6

How does sodium react when placed in water and how does it react when placed in acid (2 points)

Answer 6

• sodium in water= fizzes energetically+ enough gas given off that it can be lit
• sodium in acid= explosive

Question 7

How does lithium react when placed in water and how does it react when placed in acid? (2 points)

Answer 7

• lithium in water= fizzes energetically+ heat given out+ metal moves around the surface
• lithium in acid= hydrogen and heat given off+ sometimes explodes

Question 8

How does calcium react when placed in water and how does it react when placed in acid? (2 points)

Answer 8

• calcium in water= bubbles of gas+ heat given out
• calcium in acid= heat+ hydrogen given off

Question 9

How does magnesium react when placed in water and how does it react when placed in acid? (2 points)

Answer 9

• magnesium in water= DOES NOT REACT
• magnesium in acid= reacts energetically

Question 10

How does iron react in water and how does it react when placed in acid?

Answer 10

• iron in water= DOES NOT REACT

-iron in acid= reacts slowly

Question 11

What are the products from reacting metals with acids?

Answer 11

When a metal reacts with an acid the products are always a SALT AND HYDROGEN GAS

Question 12

What is the general word equation for the reaction of metals with acids?

Answer 12

Metal + acid —-> salt + hydrogen

Question 13

What is the surname of the salt when HYDROCHLORIC ACID is used?

Answer 13

Chloride

Question 14

What is the surname of the salt when SULFURIC ACID is used?

Answer 14

Sulfate

Question 15

What is the surname of the salt when NITRIC ACID is used?

Answer 15

Nitrate

Question 16

What would the products be from: iron + sulfuric acid (write whole word equation)

Answer 16

Iron + sulfuric acid —-> IRON SULFATE + HYDROGEN