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#7. Acid's and Bases in Action: Outcome A2B

Posljednje ažuriranje over 1 year ago

7

1

1.2f

1

1.2f

1

1.2f

1

1.2h

1

1.2h

1

Pitanje 6

6.

Question 6: The rust on cars is formed by corrosion. Which of the following statements is correct?

a. Rust occurs on copper metal only.

b. Rust decreases in the presence of oxygen.

c. Rust increases in the presence of acid rain.

d. Rust increases in the presence of carbon dioxide.

1.2h

1

1.2h

Pitanje 1

1.

Neutralization happens when acids react with bases. Which of the following is an example of neutralization?

corrosion

making hand soap

antacids used to treat heartburn

washing hair with a low pH shampoo

Pitanje 2

2.

When an acid and base are mixed, bubbles usually form. What gas is produced from the acid-base reaction in sponge toffee?

carbon dioxide

hydrogen

nitrogen

oxygen

Pitanje 3

3.

After 10mL of acid has neutralized 10mL of base, which of the following litmus results would be correct?

red litmus turns blue - blue litmus turns red

red litmus turns blue - blue litmus stays blue

red litmus stays red - blue litmus turns red

red litmus stays red - blue litmus stays blue

Pitanje 4

4.

The air corrodes metals. What part of the air is involved in this reaction?

oxygen

nitrogen

hydrogen

carbon dioxide

Pitanje 5

5.

Which of the following statements about corrosive substances is correct?

taste sour only

cure heartburn

have a pH near 7.0

may cause severe burns to skin

Pitanje 7

7.

Question 7: Which of the following would increase in rate due to acid rain and salts?

a. corrosion.

b. the greenhouse effect.

c. neutralization reactions.

d. decomposition reactions.