Shark quiz

• X = Artery
  Y = Vein
  Z= Capillary
• X = Artery
  Y = Capillary
  Z= Vein
• X = Vein
  Y = Artery
  Z= Capillary
• X = Vein
  Y = Capillary
  Z= Artery

• A
• B
• C
• D

• A
• B
• C
• D

• A

• B

• C

• D

• pole 1 and pole 2.

• pole 2 and pole 3.

• pole 3 and pole 4.

• pole 4 and pole 5.

A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?

• It falls with decreasing acceleration.

• It falls with constant acceleration.

• It falls with decreasing speed.

• It falls with constant speed.

• 4.0 s

• 6.0 s

• 10 s

• 16 s

• A

• B

• C

• D

A student carried out paper chromatography on a mixture of amino acids. The student sprayed the dried chromatogram with a locating agent. What is the function of the locating agent?

• to dissolve the amino acids

• to form coloured spots with the amino acids

• to preserve the amino acids

• to stop the amino acids reacting

A student put 25.0 cm³ of dilute hydrochloric acid into a conical flask. The student added 2.5 g of solid sodium carbonate and measured the change in temperature of the mixture. Which apparatus does the student need to use to obtain the most accurate results?

• balance, measuring cylinder, thermometer

• balance, pipette, stopwatch

• balance, pipette, thermometer

• burette, pipette, thermometer