Introduction to Matter

A (a)   is a group of two or more atoms held together by chemical bonds.

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A volume of 25 milliliters is the same as a volume of (a)   cubic centimeters.

The ability to do work or cause change describes

• temperature

• density

• matter

• energy

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The fact that matter is not created nor destroyed in any chemical or physical change is called the (a)   .

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H₂O, CO₂, C₁₂H₂₂O₁₁ are all examples of chemical

• bonds

• formulas

• changes

• properties

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what holds atoms together in a molecule?

• chemical bonds

• density

• physical bonds

• gravity

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The volume of an irregular object can be measured by

• multiplying length, width, and height

• multiplying its density by mass

• submerging the object in water in a graduated cylinder

• placing the object on a triple beam balance

How did the temperature change in reaction A differ from that in reaction B?

• Reaction A temperature went down, Reaction B went up

• Reaction A lost 30 degrees, and REaction B gained 16 degrees

• Temperature rose in reaction A, but fell in reaction B.

• Both reactions gained temperature.

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A substance that undergoes a chemical change is still the same substance after the change.

• True

• False, chemical

• False, physical

• False, homogeneous

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A substance is a single kind of matter that has a specific composition.

• True

• False, atom

• False, molecule

• False, element