Chapter 2 AP BIO QUIZ

Cation is . . ?

• a negatively charged ion

• a negatively charged proton

• a positively charged ion

• a positively charged compound found in DNA

compounds is a substance with

• 2 or more neutrons

• 2 or elements

• 2 or atoms

• 2 or more protons

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An element’s atomic number is the number of

• none of the above

• electrons in its nucleus

• protons in its nucleus

• neutrons in its nucleus

Chemical reactions are ...?

• the making and breaking of chemical bonds

• the making and breaking of positive covalent bonds

• the making and breaking of change in the chemical reactions

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Valence electrons ..?

• Occupy no change in the inner shell

• Occupy the valance shell

• Occupy chemical bonds in the charged atom

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An atom is the smallest unit of matter that?

• that still retains the properties of an element

• that does not retains the properties of an element

• that still retains the properties of RDNA

• that still retains the properties of life

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Ions are ?

• the results of opposite charged atoms

• the results of opposite charged protons

• the results of opposite charged elements

Anions are charged

• neutral

• positive

• negative

An element is a substance that?

• can be broken down to other substances by compounds

• cannot be broken down to other substances by chemical reactions

• can be broken down to other substances by chemical reactions

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Ionic compounds ....?

• compounds formed by covalent bonds

• are formed by protons

• are not compounds formed by ionic bonds

• compounds formed by ionic bonds