QUESTION 1 Which one of the following is an example of a physical change? A. iron rusting B. a steak cooking C. sugar dissolving in water D. a candle burning
QUESTION 2A physical change means that no new substance is formed. A. true B. false
QUESTION 3 Breaking water up by separating it into hydrogen and oxygen is an example of a ... A. physical change. B. chemical change
QUESTION 4 Melting and boiling causes a ... A. physical change. B. chemical change.
QUESTION 5A change in size or shape is a ... A.physical change. B. chemical change.
QUESTION 6A chemical change means that a new substance with new properties is formed. A.true B. false
QUESTION 7 The fact that sugar is white is a ... A.physical property. B. chemical property.
QUESTION 8 Iron rusts when exposed to air. This is a ... A.physical property. B. chemical property.
QUESTION 9 Whichone of the following is NOT a physical property of hydrogen? A.it is a gas B. it is explosive C.it is colourless D.it has no smell
QUESTION 10 Whichone of the following is not a physical change? A. clothes drying in the dryer B. making a cup of coffee C. chopping wood D. boiling an egg
QUESTION 11 Atoms in a liquid are farther apart than the atoms in a gas. True False
QUESTION 12 Which has the least energetic molecules A. Solids B. Liquids C. Gases D. Plasmas
QUESTION 13 Whatforce pulls liquids towards the ground? A. Pressure B. Temperature C. Gravity D. Centrifugal
QUESTION 14 When a substance goes from being a solid to a liquid, it is a... A. Chemical Change B. Physical Change
QUESTION 15 Which of these choices will NOT change the state of matter? A. Temperature B. Crushing a Crystal C. Pressure D. Electricity
QUESTION 16 What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 29.4 cm3?
QUESTION 17 A cup of gold colored metal beads was measured to have a mass 425 grams. By water displacement, the volume of the beads was calculated to be 48.0 cm3. Given the following densities, identify the metal. Gold: 19.3 g/mL Copper: 8.86 g/mL Bronze: 9.87 g/mL
QUESTION 18 Anice cube measuring 5.80 cm by 5.80 cm by 5.80 cm has a density of 0.917 g/mL. What is the mass?
QUESTION 19A little aluminum boat (mass of 14.50 g) has a volume of 450.00 cm3. The boat is place in a small pool of water and carefully filled with pennies. If each penny has a mass of 2.50 g, how many pennies can be added to the boat before it sinks?
QUESTION 20 Gasoline is a non-polar liquid that will float on water. 450 grams of gasoline is spilled into a puddle of water. If the density of gasoline is 0.665 g/mL, what volume of gasoline is spilled?