Chemistry Makeup Quiz (0654)

Electrons are (a)   charged

Cl₂ + 2e- --> 2Cl ^- is an example of:

• a chemical reaction

• redox

• oxidation

• reduction

Tags

NGSS.MS-PS1-2

What charge is a neutron?

• negative

• positive

• neutral

• atom

How many protons (+) in Pb?

• 88

• 62

• 83

• 82

Dilute hydrochloric acid is added to lumps of calcium carbonate.

Which change decreases the rate of the reaction?

• A Decrease the temperature of the acid.

• B Increase the concentration of the acid.

• C Use a larger volume of the acid.

• D Use powdered calcium carbonate.

The formula of ethanol is C₂H₅OH.

How many different elements are present in ethanol?

• 1

• 3

• 4

• 9

Tags

NGSS.MS-PS1-1

In which word equation is the underlined substance being oxidised?

• carbon dioxide + carbon --> carbon monoxide

• carbon monoxide + iron oxide --> carbon dioxide + iron

• copper oxide + magnesium --> magnesium oxide + copper

• magnesium oxide + hydrochloric acid --> magnesium chloride + water

What do the chemical symbols N₂ and Ni represent?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-1

Large hydrocarbons can be .….X….. to make smaller, more useful molecules. Small molecules can be …..Y….. to make long molecules.

What are X and Y?

• A

• B

• C

• D

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

NGSS.MS-PS1-4

Dilute sulphuric acid is added to antacid tablets in the apparatus shown.

The limewater turns milky. What do the antacid tablets contain?

• Magnesium

• Magnesium carbonate

• Magnesium hydroxide

• Magnesium oxide

Tags

NGSS.MS-PS1-2