Y13 Jan Mock Paper 1

Q1.

If a half-life is 4 minutes long, how many half-lives is 12 minutes?

Q8.

nX + mO₂ → 1 X₃O₇

What is m?

Q9.

What are the units of Avogadro's Number?

Answer explanation

calculate the Mr in gmol-1 by using mass (g) and Avogadro's number

Q11.

When gas condenses, what is the sign of ΔH?

Q13.

Molecules which have polar bonds but are totally ___________ are non-polar

Q14.(b)

The energy units in the gas constant, R, are...

Q15(c)i.

Put these in order of increasing 1st Ionisation Energy

(smallest to largest)

• Be

• B

• C

• Li

Q15(c)i.

Put these in order of increasing 1st Ionisation Energy

(smallest to largest)

• C

• O

• F

• N