Physical Science Ch.2 Review For Test: Question Preview (ID: 21583)

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How many oxygen atoms are in one molecule of table sugar (C12H22O11)?
a) 2 b) 11 c) 12 d) 22
A molecule of carbon dioxide (CO2) is made from ______________ combining one carbon atom and two oxygen atoms.
a) physically b) ionically c) thermally d) chemically
A substance that cannot be broken down into simpler substances is
a) a compound b) a mixture c) an element d) an atom
A mixture of flour and water is called a ___________________ mixture because the substances do not dissolve.
a) miscible b) homogeneous c) heterogeneous d) none of the above
Two or more liquids that can dissolve into each other are referred to as ___________________.
a) miscible b) immiscible c) homogeneous d) none of the above
Each molecule of aluminum oxide, Al2O3 contains _____________ atoms of aluminum.
a) 6 b) 5 c) 2 d) none of the above
Aluminum, nitrogen, and sulfur are examples of __________________.
a) elements b) compounds c) mixtures d) none of the above
Which of the following is NOT a potential sign of a chemical change?
a) release of a gas b) evaporation of water c) change of color d) production of gas
Which of the following is an example of a chemical change?
a) playing a piano b) cooking a pizza c) melting a metal d) none of the above
Which of the following is an example of a physical change?
a) burning wood b) cooking a pancake c) a metal corroding d) dissolving sugar in water
Lead has a density of 11.3 g/cm^3 and a mass of 138.5 g. What is its volume?
a) 12.3 cm^3 b) 0.08 cm^3 c) 1565.1 cm^3 d) none of the above
Which of the following is NOT an example of a physical property?
a) melting point b) flammability c) freezing point d) density
Knowing the chemical properties of a substance will tell you how the substance
a) looks b) smells c) can be broken down into atoms d) reacts with other substances
A material that can be represented by a chemical formula is
a) an element. b) a mixture. c) a homogeneous solution d) a pure substance
The chemical symbol for phosphoric acid is H3PO4. How many atoms are contained in each molecule of phosphoric acid?
a) 8 b) 7 c) 4 d) none of the above
The smallest unit of a substance that behaves like the substance is
a) an element b) an atom c) a molecule d) a compound
Matter is defined as anything that
a) can be seen and touched. b) has mass and takes up space. c) can be weighed. d) contains kinetic or potential energy.
A liquid changes rapidly into a gas at the liquid's
a) boiling point b) freezing point c) melting point d) condensation point
What is the density of a sample of gas with a mass of 45 g and volume of 8500 cm^3?
a) 188.9 g/cm^3 b) 382,500 g/cm^3 c) 0.005 g/cm^3 d) none of the above
What is the mass of a solid with a density of 13.8 g/cm^3 and volume of 325 cm^3?
a) 4,485 g b) 0.04 g c) 23.6 g d) none of the above
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