Lecture 3

Question 1

four known forms of energy

Answer 1

chemical, electrical, mechanical, and electromagnet

Question 2

energy

chemical

Answer 2

stored in the bonds of chemical substances

Question 3

energy

electrical

Answer 3

results from the movement of electrons

Question 4

energy

mechanical

Answer 4

directly involved in moving matter

Question 5

energy

radiant/electromagnetic

Answer 5

energy traveling in waves

Question 6

energy

conservation of energy principal

Answer 6

states that the total amount of energy
in the universe is constant. Energy is neither created nor destroyed, it
only changes form.

Question 7

two TYPES of energy

Answer 7

potential and kinetic

Question 8

cell respiration formula

Answer 8

oxygen + glucose = energy (ATP) + carbon dioxide + water + heat

Question 9

potential energy

Answer 9

energy of position/stored energy

Question 10

kinetic energy

Answer 10

energy in motion

Question 11

four states of matter

Answer 11

solid, liquid, gas, plasma

Question 12

states of matter

solid matter

Answer 12

has definite shape and volume

Question 13

states of matter

liquid matter

Answer 13

definite volume, changeable shape

Question 14

states of matter

gas matter

Answer 14

changeable shape and volume

Question 15

states of matter

plasma matter

Answer 15

what space is made of

Question 16

matter

Answer 16

anything that occupies space and has mass

Question 17

mass

Answer 17

the amount of matter in an object

Question 18

weight

Answer 18

the gravitational force acting on an object of a given mass

Question 19

element

Answer 19

simplest type of matter with unique chemical properties; composed of atoms of only one kind

Question 20

atom

Answer 20

smallest particle of an element that has chemical characteristics of that element

Question 21

common elements in body

Answer 21

(CHON) hydrogen , carbon, nitrogen, oxygen
(96.5% of body weight)

Question 22

lesser elements in body

Answer 22

calcium, phosphorus, potassium, sulfur, sodium, chlorine, magnesium, iodine, and iron (3.9%)

Question 23

trace elements in body (0.01%)

Answer 23

copper, zinc, tin etc

Question 24

atoms

Answer 24

composed of subatomic particles

Question 25

what are the subatomic particles?

Answer 25

neutrons, protons, and electrons

Question 26

neutrons

Answer 26

no electrical charge

Question 27

protons

Answer 27

one positive charge

Question 28

electrons

Answer 28

one negative charge

Question 29

nucleus

Answer 29

formed by protons and neutrons

Question 30

volume of atom

Answer 30

mostly made up of electrons

Question 31

atomic number

Answer 31

equal to number of protons in each atom, which is equal to number of electrons

Question 32

mass number

Answer 32

number of protons plus number of neutrons

Question 33

isotopes

Answer 33

two or more forms of same element with same number o protons and electrons but different neutron number.

Question 34

molar mass

Answer 34

mass of one mole of a substance in grams, which is equal to its atomic mass units

Question 35

# chemical bonding ionic

Answer 35

one atom steals an electron from another

Question 36

# chemical bonding covalent

Answer 36

atoms share electrons with each other

Question 37

# chemical bonding hydrogen

Answer 37

opposite charge of molecules attract each other

Question 38

# chemical bond peptide

Answer 38

a covalent bond joining the alpha amino group of one amino acid to the carboxyl group of another amino acid through the loss of water forming a peptide.

Question 38

molecules

Answer 38

two or more atoms chemically combined to form an independent unit

Question 39

compounds

Answer 39

a substance composed of two or more different types of atoms chemically combined

Question 40

molecular mass

Answer 40

determined by adding up atomic masses of its atoms or ions

Question 41

anion

Answer 41

negatively charged, gain electrons

Question 41

cation

Answer 41

+ charge, lost electrons

Question 42

solubility

Answer 42

ability of one substance to dissolve in another

Question 43

dissociation

Answer 43

particles break apart