BGCSE Review I

Which state(s) of matter cannot be compressed?

• solid, liquid, and gas

• solid and gas

• solid and liquid

• solid only

Which statement about particles in a liquid is correct?

• They are freely moving but maintain weak attractions with each other

• They are tightly packed together

• They are arranged in a regular pattern

• they vibrate

Which method is best suited for a students to demonstrate that there are salts present in water?

• chromatography

• crystallization

• distillation

• filtration

A student measured 200 $cm^3$  of water using a measuring cylinder. What will be the equivalent measure in  $dm^3$  

• 0.02 

• 0.2

• 2

• 200

The yellow elder flower is the national flower of The Bahamas. Which method may be used by chemistry to separate the pigments of this flower?

• centrifugation

• chromatography

• distillation

• filtration

Which apparatus is best suited to measure the volume of a block of wood?

• meter ruler

• measuring cylinder

• beam balance

• clock

Which apparatus is best suited to measure the volume of bromine solution?

• measuring cylinder

• meter ruler

• conical flask

• gas syringe

What is the correct unit to record the volume of a solution?

• g

• mol/dm3

• s

• cm3

Solution X turns litmus blue. Solution Y turns litmus red. Both solutions are the same concentration. A student adds equal volumes of solution X to solution Y to produce solution Z. What colour change of red and blue in solution Z?

• blue litmus - no change; red litmus - no change -

• blue litmus - turns red; red litmus turns blue

• blue litmus - no change ; red litmus turns blue

• blue litmus turns red; red litmus - no change

A solution contain a high concentration of hydrogen ions (H+). What ill the pH of the solution be?

• 1

• 7

• 9

• 11