1) What property of a material measures its ability to conduct electricity? a) Thermal conductivity b) Electrical conductivity 2) What is glass mostly made of? a) Sand b) Wood 3) Which of these is a metal? a) iron b) plastic 4) What happens when you heat water? a) It turns into ice b) It turns into steam 5) What is the term for a material’s ability to return to its original shape after being deformed? a) Plasticity b) Elasticity 6) Which material is an example of a good thermal conductor? a) Copper b) Rubber 7) Which of the following best describes a composite material? a) A material made from a single chemical element. b) A material made by combining two or more different materials. 8) What is plastic made from? a) Oil b) Water 9) Which of these is a natural material? a) Wood b) Plastic 10) What is the main property of glass? a) It is transparent b) It is magnetic 11) What is a property of wood? a) It conducts electricity b) It can float in water 12) What happens to metal when heated? a) It shrinks b) It expands 13) Which of these is a physical property of a material? a) Reactivity with acid b) Density 14) What happens to paper when burned? a) It turns into ash b) It becomes water 15) What happens when water freezes? a) It turns into steam b) It turns into ice

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