Exam Deck Chemistry

Question 1

substance that cannot be broken down into other substances by chemical reactions.

Answer 1

element

Question 2

positively charged, determined by atomic number

Answer 2

protons

Question 3

no charge, add to mass number

Answer 3

neutron

Question 4

negatively charged, equal to protons except for ions

Answer 4

electrons

Question 5

smallest form of an element

Answer 5

atom

Question 6

positively charged, more protons than electrons

Answer 6

cations

Question 7

negatively charged, less protons than electrons

Answer 7

anions

Question 8

atoms that have gained or lost an electron

Answer 8

ions

Question 9

atoms that have different mass numbers from each other

Answer 9

isotopes

Question 10

any atom with unstable number of neutrons, used in medical imaging

Answer 10

radioisotopes

Question 11

two or more atoms bonded together by covalent or ionic bonds

Answer 11

molecules

Question 12

formed between ions

Answer 12

ionic bonds

Question 13

sharing of electrons between two or more atoms

Answer 13

covalent bonds

Question 14

commonly form between two or more polar water molecules

Answer 14

hydrogen bonds

Question 15

electrons are shared equally (H2, O2, CH4)

Answer 15

non polar covalent bond

Question 16

electrons are shared unequally, (H2O)

Answer 16

polar covalent bond

Question 17

solvent for ions and polar molecules, facilitates chemical reactions. Have cohesion and adhesion. Have high specific heat capacity and high heat of vaporization

Answer 17

properties of water

Question 18

ability of one water molecule to stick to another water molecule

Answer 18

cohesion

Question 19

ability for water molecule’s ability to stick to something else

Answer 19

adhesion

Question 20

measures how much acidity (H+ ions) in a solution

Answer 20

pH scale

Question 21

accept H+ ions or release hydroxide ions (OH-), pH above 7

Answer 21

basic

Question 22

release H+ ions, pH below 7

Answer 22

acidic

Question 23

Physiologic pH is..

Answer 23

7.4

Question 24

pH under 7.35

Answer 24

acidosis

Question 25

pH over 7.45

Answer 25

alkalosis

Question 26

help maintain pH by reversibly absorbing excess H+ or OH- Ions in a solution

Answer 26

buffers

Question 27

can absorb or lose a lot of energy before temperature changes

Answer 27

high specific heat