1) Plastic materials are... a) very difficult to break b) very difficult to scratch or cut c) easy to bend 2) Soft materials... a) are scratched or cut easily b) are very difficult to break c) go back to their shape after we stretch them 3) Thermal conductors are... a) soft materials b) materials that can get hot c) materials that don´t get hot d) elastic materials 4) A sponge is an example of a... a) plastic material b) hard material c) tough material d) elastic material 5) True or False: Plastic and wood are thermal insulators. a) True b) False 6) If a material can dissolve in water, it is... a) insoluble b) soluble 7) True or False: salt is insoluble in water a) True b) False 8) Volume is... a) the amount of mass in the volume of an object b) the amount of space that matter occupies c) the amount of matter in an object 9) True or False: 1 ml = 10 cm3 a) True b) False 10) What are the units of mass? a) g/cm3 b) g or kg c) cm3 11) What are the units of volume? a) g/cm3 b) g or kg c) cm3 12) What are the units of density? a) g/cm3 b) g or kg c) cm3 13) I use a water jug, a scale, and maths to find... a) volume b) mass c) density 14) If I place an object in a water jug to see how much the water rises, I am measuring... a) volume b) density c) mass 15) If I place something on a scale, I am measuring... a) volume b) mass c) density 16) Density is... a) the amount of mass in the volume of an object b) the amount of space that matter occupies c) the amount of matter in an object 17) Mass is... a) the amount of mass in the volume of an object b) the amount of space that matter occupies c) the amount of matter in an object 18) Matter can have _____________ changes. a) physical and shape b) shape and chemical c) chemical and physical 19) Changes that can´t be reversed. a) physical b) chemical 20) Changes that can be reversed. a) physical b) chemical 21) When the composition changes and new matter is formed. a) chemical b) physical 22) When the composition doesn´t change. a) physical b) chemical 23) Is burning paper a physical or chemical change? a) physical b) chemical 24) Is freezing water a physical or chemical change? a) physical b) chemical 25) Is folding paper a physical or chemical change? a) physical b) chemical 26) Steel is an example of a... a) soft material b) elastic material c) fragile material d) plastic material e) tough material 27) True or False: Fragile materials do not break easily. a) True b) False 28) Is iron rusting a physical or chemical change? a) physical b) chemical 29) Throwing a paper airplane from one place to another is a physical or chemical change? a) physical b) chemical 30) Is making yogurt a physical or chemical change? a) physical b) chemical 31) Is heating milk a physical or chemical change? a) physical b) chemical 32) Which of these words does NOTdescribe physical change? a) shape b) state c) temperature d) rot 33) Which of these words does NOT describe chemical change? a) rust b) burn c) state d) ferment

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