Biology: Chapter 2 The Chemistry of Life Sections 1 & 2

The basic unit of matter is a(n)

• atom

• cell

• star

• protein

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NGSS.MS-PS1-1

NGSS.MS-PS1-5

All of the following are elements except for

• hydrogen

• glucose

• nitrogen

• gold

An atom that has gained or lost one or more electrons is called a(n)

• compound

• proton

• ion

• molecule

Which of the following is an example of an ionic bond?

• water

• methane

• ammonia

• sodium chloride

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NGSS.MS-PS1-5

Two or more atoms held together by covalent bonds are known as

• molecules

• ions

• electrons

• lipids

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NGSS.MS-PS1-1

Which of the following is not a property of water?

• surface tension

• adhesion

• cohesion

• carbon fixation

Each of these properties are related to hydrogen bonding that occurs in water except

• high specific heat

• adhesion

• cohesion

• insulation

A substance that dissolves in a solution is known as the

• solute

• solvent

• dissolution

• molecule

Which kind of scale is used to determine the acidity and alkalinity of a substance?

• food chain

• pH

• phylogenetic diagram

• dichotomous key

Which substance has a pH of 7?

• blood

• orange juice

• pure water

• bleach