# Honors PS Semester 1 Review: Question Preview (ID: 28529)

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 Boyle's Law relates the volume of a gas to its _____________. a) pressure b) volume c) temperature d) Why does wood float on water? a) The water is heavier than the wood. b) The wood is less dense than the water. c) The wood doesn't float! d) The water is pushing downward on the wood. Why is an atom's overall charge neutral? a) electrons=protons b) protons=neutrons c) neutrons=electrons d) atomic number=protons What is the charge of an atom's nucleus? a) negative b) positive c) neutral d) How many protons does the element Magnesium have if it's atomic number is 12? a) 12 b) 24 c) 6 d) 2 What is the total net charge of an atom? a) negative b) positive c) neutral d) slightly positive When ice melts to form water, energy is... a) taken in. b) given off. c) recycled. d) released. Which of the following is an example of a physical change? a) breathing b) photosynthesis c) leaves changing colors in the fall d) dissolving salt in water What is the density of a substance that has a mass of 10 g and a volume of 5 mL? a) 2 g/mL b) 50 g/mL c) 5 g/mL d) 0.5 g/mL Express 0.0000895 in scientific notation. a) 0.895 x 10^4 b) 89.5 x 10^6 c) 8.95 x10^-5 d) 8.95 x10^5 How many meters are there in 67.5 kilometers? a) 67,500 m b) 0.0675 m c) 0.675 m d) 6,750 m 350 Pascals are equal to... a) 350 N/m^2 b) 350 N/cm^2 c) 350 N d) 350 cm^2 When water vapor condenses into water droplets, energy is... a) absorbed. b) released. c) created. d) restored. Which of the following is not always an indicator of a chemical reaction? a) fizzing and foaming b) formation of heat c) production of gas d) change in color Which of the following is not a physical property of matter? a) reactivity b) luster c) boiling point d) freezing point Which state of matter does not have the freedom to flow? a) solid b) liquid c) gas d) plasma How many atoms are contained within 2 molecules of glucose (C6H12O6)? a) 12 b) 24 c) 48 d) 6 How many significant figures are there is the number 0.0005680? a) 1 b) 2 c) 3 d) 4 How many significant figures are there in 758,900. ? a) 6 b) 4 c) 2 d) 1 What is the formula used to calculate Pascal's Principle? a) F1/A1=F2/A2 b) P1V1=P2V2 c) P/1=F/A d) D/1=M/V
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