Copper(II) Chloride Experiment LEVEL 3

What safety equipment should be used when handling copper(II) chloride?

• Gloves only

• Goggles only

• Gloves and goggles

• No protection needed

What is the state of copper(II) chloride before it is mixed with water?

• Liquid

• Gas

• Solid

• Plasma

What is the color of copper(II) chloride crystals?

• White

• Blue-green

• Red

• Yellow

What was the volume of water used in the experiment?

• 50 mL

• 75 mL

• 100 mL

• 25 mL

What happens when copper(II) chloride is added to water?

• It explodes

• It dissolves and forms a solution

• It forms a solid

• It evaporates

Tags

NGSS.MS-PS1-2

What tool is used to measure the water?

• Beaker

• Flask

• Graduated cylinder

• Thermometer

What is the purpose of not stirring the copper chloride immediately?

• To avoid breaking the thermometer

• To allow observation of natural dissolution

• To save time

• To cool the solution

What is used to stir or swirl the mixture?

• Spoon

• Tweezers

• Stick

• Pen

What is the main sign that copper chloride is dissolving?

• The solution turns clear

• The solid floats

• The color changes and the solid disappears

• The beaker vibrates

Tags

NGSS.MS-PS1-2

What is the balanced chemical equation for this reaction?

• CuCl₂ + Al → Cu + AlCl₂

• 3CuCl₂ + 2Al → 2AlCl₃ + 3Cu

• Cu + Al → AlCl₃ + Cu

• CuCl₂ + Al → AlCu + Cl₂

Tags

NGSS.MS-PS1-5