Science 5

Copper is often used in electrical wires. What property of copper allows for this use?

• combustibility

• conductivity

• elasticity

• malleability

Which of these materials DOES NOT belong to the group?

• 
• 
• 
• 

2. ____________ is the property of a material that allows it to be bent without breaking.

• Opacity

• Flexibility

• Conductivity

• Flammability

Which of the following is a combustible but not a flammable material?

• coal

• diesel

• gasoline

• glass

Copper is often used in electrical wires. What property of copper allows for this use?

• combustibility

• conductivity

• elasticity

• malleability

Why is rubber useful in making electrical wire?

• Rubber does not bend.

• Rubber is a conductor

• Rubber is an insulator.

• Rubber is malleable

Which of the following is a chemical change?

• making a lemonade

• caramelization of sugar

• cracking of egg

• phase change

Conditions under which changes in materials happen are absence or presence of oxygen and ________.

Under which condition does the change in the picture take place?

• presence of oxygen

• absence of oxygen

• application of heat

Under which condition can you put out fire in the picture?

• presence of oxygen

• absence of oxygen

• application of heat