week 1

Question 1

what is the simplest chemical unit of matter?

Answer 1

atoms

Question 2

what is largest-atom/molecule/proton/neutron/electron

Answer 2

molecule

Question 3

an atomic number represents what ?

Answer 3

protons in an atom

Question 4

atoms with the same atomic number are grouped into?

Answer 4

elements

Question 5

the mass number of an atom indicates the number of what?

Answer 5

protons and neutrons in nucleus

Question 6

elements that have atoms with full electron shells are called?

Answer 6

inert

Question 7

isotopes of oxygen has 8ps, 10n and 8e whats the mass number?

Answer 7

18

Question 8

isotopes of an element difer in the number of protons/neutrons/electrons?

Answer 8

neutrons

Question 9

what charge does an electron have?

Answer 9

negative

Question 10

what charge does a proton have?

Answer 10

positive

Question 11

what charge does a neutron have?

Answer 11

neutral

Question 12

what are the 4 elements that make up 96% of the body’s mass

Answer 12

O, C, H, N

Question 13

an atom os an element is distinguished from another atom of another elemnt by the number of what?

Answer 13

protons in nucleus

Question 14

subatomic particles located around the nucleus of an atom are?

Answer 14

electrons

Question 15

what does a neutral atoms contain?

Answer 15

same amount of electrons and protons

Question 16

electrons are what?
a-comprised majority of the mass of an atom b-located in the nucleus c- do not participate in the bonding of an atom d- the subatomic particle involved in bonding behaviour of atoms

Answer 16

d

Question 17

what describes a protons?
a-negative charge, no mass, found in orbitals b-no charge, mass=1, found in nucleus c-positive charge, mass=1, found in nucleus d- none of the above

Answer 17

c

Question 18

the mass number is what?

Answer 18

protons and neutrons in an atom

Question 19

if the atomic number is 19 and mass number is 39 how many neutrons will the atom have?

Answer 19

20

Question 20

energy is known as?

a- has mass b- the capacity to do work c- has weight d- takes u space

Answer 20

b

Question 21

what is chemical energy?
a- moves matter b- results from position/movement of object c- form of potential energy within chemical bond d- is not important in physiological process

Answer 21

c

Question 22

what is the bond that occurs in polar compounds like water?

Answer 22

hydrogen

Question 23

what is the chemical bond where electrons are shared?

Answer 23

covalent

Question 24

what is the volume of 1kg of water

Answer 24

litre

Question 25

what kind of solution will cause lysis(breakdown) of red blood cells?

Answer 25

hypotonic

Question 26

movement of a substance from high to low concertration

Answer 26

diffusion

Question 27

what is the universal solvent throughout the body ?

Answer 27

water

Question 28

what is a special form of diffusion where solute remains stationary and solvent moves from low to high solute concentration?

Answer 28

osmosis

Question 29

a form of measurement of concentration based on the atomic weight of compound in grams

Answer 29

mole

Question 30

2 or more different kinds of atoms chemically bond together

Answer 30

compound

Question 31

one thousands of a gram

Answer 31

milligram

Question 32

chemical bond formed by transfer of electrons resulting in a charge

Answer 32

ionic

Question 33

what solutions causes crenation (crinkling) of red blood cells?

Answer 33

hypertonic

Question 34

a solution that has large amounts of solute

Answer 34

concentrated

Question 35

IV solutions that have same concentration of electrolytes as normal blood

Answer 35

isotonic

Question 36

solution with small amount of solute in solution

Answer 36

dilute

Question 37

1 x 10-6 gram

Answer 37

microgram