Chemistry Review: Question Preview (ID: 12676)

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Iron (Fe2) in the presence of oxygen (O2) creates rust (Fe2O3). The process of rusting would be an example of what?
a) physical change
b) chemical property
c) chemical change
d) physical property

Which of the following is a physical property of copper?
a) can be formed into a wire
b) readily reacts with oxygen
c) readily reacts with water to form an acid
d) liquid at room temperature

Use the following symbols Hydrogen (H) Helium (He) Oxygen (O) Carbon (C) Silicon (Si) Iron (Fe). Which of the following is a compound?
a) CO
b) Fe
c) Si
d) He

These elements are listed with their density: (Al) 2.7, (Cu) 8.9, (Au) 19.3, (Fe) 7.9, (Pb) 11.3, (Hg) 13.6. Which element below has particles that are packed the closest together?
a) Fe
b) Pb
c) Au
d) Al

Which of the following would be a chemical change?
a) Ice melting to liquid when the temperature rises above 32 degrees fahrenheit.
b) Taking a strip of magnesium and rolling it into a ball.
c) You eating food and using it for energy.
d) A carpenter cutting would to make cabinets.

Which of the following is an example of a physical change?
a) Mixing baking soda and vinegar together causing bubbles and foam.
b) Baking a birthday cake for your mother.
c) Lighting a piece of paper on fire.
d) A glass cup falling from the counter and shattering on the floor.

Which of the following would NOT be a physical change?
a) Melting gold to make jewelry
b) Burning gasoline in a lawnmower.
c) Tearing a piece of aluminum foil
d) Boiling water for soup.

Which of the following would be an example of a HETEROGENEOUS MIXTURE?
a) Ocean water
b) Diet Coke
c) Mr. Houp's Coffee
d) A burrito

Pick the chemical change out of the following.
a) Hammering wood together.
b) mixing oil and water.
c) A firework exploding
d) Separating sand from gravel.

Fire protectant suits that firefighters wear are not flammable, flammability is an example of which of the following?
a) Physical property
b) Chemical change
c) Chemical property
d) Physical change

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