Lesson Worksheet: Reacting Metals and Acid Science

In this worksheet, we will practice describing the reactions of metals with acids.

Q1:

A teacher doing a demonstration added a small piece of magnesium to a test tube, test tube 1, containing 5 mL of dilute hydrochloric acid. To compare the results, the teacher added a piece of zinc to a similar test tube, test tube 2, also containing 5 mL of the same hydrochloric acid. In which test tube was the reaction more vigorous?

  • ATest tube 2
  • BTest tube 1

Q2:

Which of the following would not be an indication that a chemical reaction has taken place?

  • AA change in temperature
  • BA change in state from liquid to gas
  • CA change in mass
  • DBubbles of gas being given off
  • EThe reaction mixture changing color

Q3:

Which of the following statements explains why copper does not react with dilute sulfuric acid?

  • ACopper does not contain any hydrogen.
  • BCopper is covered in a protective oxide layer.
  • CCopper is more reactive than sulfuric acid.
  • DCopper is less reactive than hydrogen.
  • ECopper only reacts with hydrochloric acid.

Q4:

Which of the following is the correct word equation to explain the general reaction between an acid and a metal?

  • AAcidmetalsalt+
  • BAcidmetalsalthydrogencarbondioxide+++
  • CAcidmetalsaltwatercarbondioxide+++
  • DAcidmetalsaltwater++
  • EAcidmetalsalthydrogen++

Q5:

A student observes vigorous bubbles being given off in a test tube after adding a piece of zinc metal to an unknown solution that the student suspects might be an acid. How could the student test for the presence of hydrogen gas?

  • ABy testing for a pop using a lit splint
  • BBy seeing if the gas bleaches damp red litmus paper
  • CBy bubbling the gas through limewater to see if the limewater turns milky
  • DBy seeing if the gas turns the color of damp litmus paper from red to blue
  • EBy testing with a glowing splint to see if it relights

Q6:

The four stages of the test for hydrogen gas are listed below in the wrong order:

  1. Place the end of the splint into the second test tube.
  2. Listen for a squeaky pop.
  3. Collect the gas in a second empty test tube.
  4. Light a wooden splint.

What is the correct order to correctly carry out this test?

  • A2, 1, 4, 3
  • B1, 2, 3, 4
  • C1, 3, 2, 4
  • D3, 1, 4, 2
  • E3, 4, 1, 2

Q7:

Complete the following symbol equation:

Zn+2HCl

  • AZnCl+H2
  • BZnCl+HCl2
  • CZnCl+H
  • DZnCl+H22
  • EZnCl+HO22

Q8:

A student drops a small piece of magnesium metal into a test tube containing nitric acid. The student observes bubbles in the test tube. Which gas is being produced?

  • AHydrogen sulfide
  • BCarbon dioxide
  • COxygen
  • DSteam
  • EHydrogen

Q9:

Consider the following numbered list:

  1. Sulfuric acid
  2. Hydrochloric acid
  3. Nitric acid
  4. Zinc
  5. Magnesium
  6. Calcium

Which combination of an acid and a metal produces the salt named zinc sulfate?

  • A3+6
  • B1+4
  • C2+4
  • D2+6
  • E1+5

Q10:

Complete the following word equation: Zincsulfuricacid+

  • Azincsulfatehydrogen+
  • Bzincsultehydrogenwater++
  • Czincsuldehydrogen+
  • Dzincsuldewater+
  • Ezincsulfatewater+

This lesson includes 3 additional questions and 21 additional question variations for subscribers.

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