Chemistry

Question 1

Polar Covalent

Answer 1

• different electronegativity
• non equal sharing
• H2O

Question 2

pH

Answer 2

measures relative concentration of OH- to H+

Question 3

Found within the Nucleus

Answer 3

protons

neutrons

Question 4

Cations and Anions mutually…

Answer 4

attract forming ionic bonds

Question 5

Covalent Bonds

Answer 5

atoms share electrons

Question 6

Positive Charge

Answer 6

protons

Question 7

How a Slide moves in relation to the image

Answer 7

opposite front/back and left/right

Question 8

Energy Levels

Answer 8

• orbitals closest to nucleus fill first

- the closer the orbital to the nucleus, the less energy

Question 9

Basic Solutions

Answer 9

more OH-

pH > 7

Question 10

Periodic Table Info

Answer 10

elements

• symbol
• atomic number
• atomic mass

Question 11

Type of bond determined by

Answer 11

electronegativity

Question 12

Element

Answer 12

pure chemical substance

Question 13

3 Types of Bonds

Answer 13

1. covalent (share)
2. ionic (take)
3. hydrogen (weak)

Question 14

pH Formula

Answer 14

pH= -log[H+]

Question 15

Atoms bond to form

Answer 15

molecules

Question 16

pH Scale

Answer 16

0-14

Question 17

Valence Electrons

Answer 17

occupy energy cell farthest from nucleus

Question 18

Adhesion

Answer 18

water molecules adhere to other molecules

*meniscus

Question 19

Lower Electronegativity

Answer 19

wants to get rid of electrons

Question 20

Half Life

Answer 20

time for half the amount of a radioisotope to decay

Question 21

Water is…

Answer 21

polar

Question 22

Soap

Answer 22

breaks hydrogen bonds

Question 23

Negative Charge

Answer 23

electrons

Question 24

Electronegativity

Answer 24

strength of attraction an atom has for its electrons

Question 25

How do Hydrogen bonds form?

Answer 25

- high electronegative H2O atoms are attracted to each other | - O connects to H of another

Question 26

Atomic Mass

Answer 26

protons | neutrons

Question 27

Atomic Number

Answer 27

based on number of protons which defines the element

Question 28

ATP

Answer 28

energy

Question 29

Neutral Charge

Answer 29

neutrons

Question 30

WITHIN a water molecule

Answer 30

polar covalent bond

Question 31

Orbitals

Answer 31

area surrounding the nucleus where electrons are

Question 32

Greater Electronegativity

Answer 32

wants to keep electrons

Question 33

Atoms

Answer 33

smallest unit that has the element's characteristics

Question 34

Nonpolar Covalent

Answer 34

- similar electronegativity - equal sharing * O2

Question 35

Cohesion

Answer 35

water molecules stick together

Question 36

Hydrogen Bond Ratio

Answer 36

1:4

Question 37

Bond gives protein 3D shape?

Answer 37

hydrogen

Question 38

Ionic Bonds

Answer 38

electrons of high electronegativity "take" electrons from low

Question 39

Water

Answer 39

most abundant molecule in living organisms

Question 40

Opposite Charges

Answer 40

hold the atom together/keep everything up

Question 41

3 Subatomic Particles

Answer 41

protons neutrons electrons

Question 42

Electron Shells

Answer 42

first *1 orbital= 2 electrons second *4 orbitals= 8 electrons

Question 43

SPONCH

Answer 43

``` sulfur phosphorus oxygen nitrogen carbon hydrogen ```

Question 44

Number of Known Elements

Answer 44

118

Question 45

Aqueous Environment

Answer 45

most chemical reactions within an organism take place

Question 46

Hydrogen Bonds

Answer 46

weakest of all chemical attractions

Question 47

Maximum # an orbital can hold

Answer 47

two

Question 48

Acidic Solutions

Answer 48

more H+ | pH < 7

Question 49

Surface Tension

Answer 49

measure of how difficult it is to break the surface of water

Question 50

Neutral Solutions

Answer 50

pH= 7

Question 51

Cation

Answer 51

positive because lost an electron | *K+, Na+

Question 52

Anion

Answer 52

negative because gained an electron | *Cl-, S-

Question 53

Isotope

Answer 53

atoms of same element with different number of neutrons

Question 54

Ion

Answer 54

atom that gained or lost electron

Question 55

Specific Heat

Answer 55

amount of energy it takes to raise temp of a substance 1 degree C