What is the melting point of a substance?, Liquid to solid, Gas to liquid, Solid to liquid, Liquid to gas, What is the boiling point of a substance?, Liquid to gas, Gas to liquid, Solid to gas, Solid to liquid, Which process needs heating?, Depositing, Freezing, Condensing, Melting, Which process also needs heating?, Melting back, Boiling, Condensing, Freezing, At the melting point, a solid changes into a what?, Crystal, Gas, Liquid, Plasma, At the boiling point, a liquid changes into a what?, Gas, Metal, Ice, Solid, Which substance has a melting point of 0°C?, Iron, Water, Gold, Oxygen, Which substance has a boiling point of 100°C at normal pressure?, Copper, Nitrogen, Water, Mercury, What happens when ice is heated?, It becomes a gas immediately., It melts and becomes liquid water., It becomes gold., It disappears., What is the melting point of ice?, 0°C, 50°C, C. 100°C, D. 1064°C, What is the melting point of gold?, 100°C, 118°C, C. 1064°C, D. 2856°C, What is a property of a substance?, Something that helps us identify and distinguish it from other substances., B. Something that makes it disappear., C. Something that changes every second., D. Something that only gases have., What is a property of a substance?, Something that helps us identify and distinguish it from other substances., B. Something that makes it disappear., C. Something that changes every second., D. Something that only gases have., What is the boiling point of vinegar, according to the passage?, 0°C, B. 100°C, C. 118°C, D. 1064°C, What is the boiling point of liquid gold?, 00°C, B. 118°C, C. 1064°C, D. 2856°C

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