Rates of Reaction

Multiple Choice

The ice formed from water vapor in the air when barium hydroxide was mixed with ammonium thiocyanate.

• Physical change

• Chemical change

Multiple Choice

What process does melting belong to?

• Exothermic

• Endothermic

Open Ended

Explain the energy transfer of this picture

Poll

What is the mean rate of reaction of the graph?

• 65 cm³/60 s

• 60 cm³/70 s

• 63 cm³/80 s

Multiple Choice

What is the mean rate of reaction of the graph?

• 0.79 cm³/s

• 0.86 cm³/s

• 1.08 cm³/s

Poll

What is the surface area of a cube of side 2cm?

• 24 cm²

• 32 cm²

• 8 cm²

Multiple Choice

What is the surface area of a cube of side 3 cm?

• 27 cm²

• 54 cm²

• 36 cm²

• 48 cm²

Multiple Choice

What is the volume of a cube of side 3 cm?

• 81 cm³

• 54 cm³

• 27 cm³

• 48 cm³

Open Ended

Calculate the surface area : volume ratio (SA:V) of a cube of side 3 cm

Multiple Choice

What is the surface area of a 27 cubes of side 1 cm?

• 27 cm²

• 162 cm²

• 100 cm²

• 216 cm²

Multiple Choice

What is the volume of 27 cubes of side 1 cm?

• 27 cm³

• 81 cm³

• 64 cm³

• 54 cm³

Open Ended

Calculate the surface area : volume ratio (SA:V) of 27 cubes of side 1 cm

Open Ended

How would splitting a large cube into 27 smaller cubes affect its rate of reaction?