Ions And

Question 1

The study of interactions between atoms and molecules

Answer 1

Chemistry

Question 2

The smallest indivisible unit of matter: interact to form molecules

Answer 2

Atom

Question 3

Atoms are composed of

Answer 3

Nucleus
Neutrons- no electrical charge
Protons- positive charge

Electrons- negative charge
Electron cloud/ shell

Question 4

Atoms with the same number of protons are classified as

Answer 4

The same chemical element

Question 5

Each different chemical element has a different number of

Answer 5

Protons- positive charge

Question 6

Atomic number aka

Answer 6

Number of protons

Question 7

Mass number aka

Answer 7

Number of protons+number of neutrons

Question 8

Number of neutrons=

Answer 8

Mass number-atomic number (which is number of protons)

Question 9

Two atoms of an element that differ in the number of neutrons

Answer 9

Isotopes

Question 10

The number of protons and electrons are

Answer 10

Equal in an atom

Question 11

Chemical behavior is determined by

Answer 11

The distribution of electrons in the electron shells

Question 12

Periodic table shows

Answer 12

The electron distribution

Question 13

The number of missing or extra electrons in the outermost shell is known as

Answer 13

The valence electrons

Question 14

Valence electrons of the combing atoms form attractive forces called

Answer 14

Chemical bonds

Question 15

A compound is

Answer 15

A molecule that contains two or more kinds of atoms

Such as water: two atoms of hydrogen and one atom of oxygen

Question 16

Octet rule

Answer 16

2,8,8

Question 17

Atoms with incomplete valence shells can

Answer 17

Share or transfer valence electrons with certain other atoms

Question 18

Held by attractions —-> staying close together

Answer 18

Chemical bonds

Question 19

Ionic bond =

Answer 19

Electron transfer

Question 20

atomic number

Answer 20

. of protons

Question 21

number of neutrons

Answer 21

mass number- atomic number

Question 22

96% of human body is made up of

Answer 22

oxygen
carbon
hydrogen
nitrogen

Question 23

number of protons + number of neutrons=

Answer 23

atomic mass

Question 24

electron transfer

Answer 24

ionic bond

Question 25

positively charged ion

Answer 25

cation

Question 26

negatively charged ion

Answer 26

anion

Question 27

cation + anion=

Answer 27

ionic bond

Question 28

electron sharing

Answer 28

covalent bond

Question 29

do not share equally pull towards could have partial + partial - charge

Answer 29

polar

Question 30

share equally non pulling no charge

Answer 30

non polar

Question 31

hydrogen atom covalently bonded to one electronegative atom is also attracted to another electronegative atom

Answer 31

hydrogen bond

Question 32

lacks carbon

Answer 32

inorganic

Question 33

polar substance undergo dissociation in water, forming a solute

Answer 33

solvent

Question 34

what type of bond absorbs heat

Answer 34

hydrogen bond temperature buffer

Question 35

dissolving

Answer 35

solvent coffee

Question 36

dissolved

Answer 36

solute sugar

Question 37

homogenous mixture made up of 2 or more substances

Answer 37

solution

Question 38

water loving

Answer 38

hydrophilic

Question 39

water fearing doesn't interact with water cannot hydrogen bond non polar non ionic

Answer 39

hydrophobic oils/ fats

Question 40

ion lost the H atom is now (OH-)

Answer 40

hydroxide ion

Question 41

gained the H atom is now H3O+

Answer 41

hydronium ion

Question 42

substance that increases the [h+} of a solution

Answer 42

acid

Question 43

has more H+ than OH-

Answer 43

acidic solution

Question 44

substance that decreases the [H+] of a solution

Answer 44

base

Question 45

equal amounts of H+ and OH-

Answer 45

neutral solution

Question 46

less H+ than OH-

Answer 46

basic solution

Question 47

resist change In the pH of a solution

Answer 47

buffers

Question 48

HCl---> H- + Cl- dissociates into one of more hydrogen ions and one or more negative ions

Answer 48

acid

Question 49

NaOH --> Na- +OH- dissociates into one or more hydroxide ions and one or more positive ions

Answer 49

Bases

Question 50

NaCl ---> Na + Cl dissociate into cations and anions neither of which is H- or OH-

Answer 50

Salt

Question 51

add H+ into a solution

Answer 51

acid

Question 52

potential of hydrogen

Answer 52

pH

Question 53

14

Answer 53

basic

Question 54

0-6

Answer 54

acidic

Question 55

7

Answer 55

neutral

Question 56

energy exits

Answer 56

exergonic

Question 57

requires energy

Answer 57

endergonic

Question 58

a+b= AB building

Answer 58

anabolism (synthetic)

Question 59

AB--> A+B breaking down

Answer 59

catabolism (decomposition)

Question 60

re-organizing NaOH HCl NaCl H2O

Answer 60

exchange (part synthesis and part decomposition)

Question 61

different order water and heat cause change

Answer 61

reversible

Question 62

remove H2O

Answer 62

hydration

Question 63

Energy storage in animals Forming barriers in cells Form hormones in animals

Answer 63

Lipids

Question 64

Contain carbon, hydrogen and oxygen but less oxygen than carbohydrates

Answer 64

Lipids

Question 65

Contain carbon, hydrogen and oxygen

Answer 65

Carbohydrates