SPS2

Which of the following is mentioned as a way to test electrical conductivity?

• Measuring temperature

• Using a battery

• Checking weight

• Observing color

What does the melting point refer to?

• The temperature at which a solid becomes a gas

• The temperature at which a solid becomes a liquid

• The temperature at which a liquid becomes a solid

• The temperature at which a gas becomes a liquid

Why is hardness an important property to identify?

• It helps determine the color of the material

• It determines how easily a material can be scratched

• It indicates the weight of the material

• It shows how the material reacts to heat

Which of the following materials is likely to have high electrical conductivity?

• Rubber

• Wood

• Copper

• Plastic

How can melting points of different materials vary?

• They are always the same for all materials

• They can be the same for metals only

• They can differ greatly among various substances

• They only depend on the size of the material

What method is used to determine the hardness of a material?

• Using a scale

• Scratch test

• Heating it

• Measuring with a ruler

Which property would be most important for making electrical wires?

• Color

• Hardness

• Electrical conductivity

• Melting point

What happens to materials when they reach their melting point?

• They become harder

• They change color

• They turn into a liquid

• They become a gas

Why is it important to understand the properties of materials?

• To choose the right materials for specific uses

• To see how pretty they are

• To know how to paint them

• To measure their size

What is a metallic bond?

• A bond between two metals

• A bond involving electricity

• A bond formed by sharing electrons

• A bond that occurs in liquids