gen c

Question 1

TRUE OR FALSE

all processes cease as temperature approaches absolute zero

Answer 1

TRUE

Question 2

any entity that occupies space and has mass

Answer 2

matter

Question 2

differentiate mass vs. weight

Answer 2

• mass - amount of matter
• weight - mass w pull of gravity

Question 3

intrinsic/intensive properties

independent on the amount of matter

Answer 3

• density
• specific gravity
• melting point

Question 4

extrinsic/extensive properties

dependent on the amount of matter

Answer 4

• weight
• volume
• pressure
• heat content

Question 5

evidences of a chemical change

Answer 5

• evolution of gas
• formation of a precipitate
• emission of light
• generation of electricity
• production of mechanical energy
• absorption or liberation of heat

Question 6

has a definite and unvarying composition

Answer 6

pure substance

Question 7

the simplest form of substance that cannot be decomposed by a simple chemical reaction

Answer 7

element

Question 8

if elements are chemically combined, it will yield _____

Answer 8

compound

Question 9

made up of 2 or more substances physically combined

Answer 9

mixture

Question 10

occurs when valence electrons around the nucleus interact

removal or addition or electrons to valence shells

Answer 10

chemical reaction

Question 11

substances that enter a chemical reaction

Answer 11

reactants

Question 12

union of oxygen to form a substance

Answer 12

oxidation

Question 13

removal of oxygen or addition of hydrogen

Answer 13

reduction

Question 14

acid-base balance to form salt & water

Answer 14

neutralization

Question 15

reaction of water in salt to form acid & base

Answer 15

hydrolysis

Question 16

reaction between alkali and fats or oils to form soap and glycerol

Answer 16

saponification

Question 17

action of bacteria or microorganisms on organic substances resulting to production of alcohol

Answer 17

fermentation

Question 18

the smallest indivisible portion of a pure chemical substance that has its unique set of chemical properties

Answer 18

molecules

Question 19

atom or molecule in which the total number of electrons is not equal to the total number of protons, therefore giving it a net positive or negative electrical charge

Answer 19

ions

Question 20

lost electron, with positive charge

Answer 20

cation

Question 21

gained electron, with negative charge

Answer 21

anion

Question 22

substances whose molecules are made up of 2 or more kinds of atoms combined in definite proportions

Answer 22

compound

Question 23

TYPES OF COMPOUND

electron transfer from an atom to another through attraction between positive and negative charged ions (nonmetal + metal)

Answer 23

ionic compound

Question 24

# TYPES OF COMPOUND **sharing of electrons** between **2 nonmetal** ions

Answer 24

covalent compound

Question 25

# TYPES OF COMPOUNDS compounds containing two elements; can either have an ionic or covalent bonding

Answer 25

binary compounds

Question 26

# TYPES OF COMPOUND formed by the interaction between elements which are metallic but the resulting compound became just like an ordinary metal

Answer 26

metallic compound

Question 27

# TYPES OF COMPOUND contains **metal and nonmetal** or polyatomic ions; considered to be ionic compounds

Answer 27

metallic compound

Question 28

# TYPES OF INORGANIC COMPOUNDS * contain hydrogen which is replaceable by a metal * yield hydrogen ions in water solutions * donate protons, accept electrons

Answer 28

acid

Question 29

# TYPES OF INORGANIC COMPOUNDS * contain metal with a hydroxyl group * accept protons, donote electrons * property: soapy or slippering in water solutions

Answer 29

base

Question 30

# TYPES OF INORGANIC COMPOUNDS formed by the combination of any positive and negative ions except hydrogen and hydroxyl ion

Answer 30

salts

Question 31

# TYPES OF INORGANIC COMPOUNDS an electrolyte that yields neither hydrogen or hydroxide from the dissolved molecule

Answer 31

salts

Question 32

# TYPES OF INORGANIC COMPOUNDS * consists of oxygen and other elements * are binary compounds formed by the reaction of oxygen with other elements

Answer 32

oxides

Question 33

positively charged electrode

Answer 33

anode

Question 34

negatively charged electrode

Answer 34

cathode

Question 35

states that chemical compounds **always contain exactly the same proportion** of elements by mass | re:copper carbonate parts

Answer 35

law of definite proportions | aka proust law

Question 36

states that when two elements form more than one compound, then the **ratio of the masses** of the second element which is combined with a fixed mass of the first element, will be a ratio of a small whole number

Answer 36

law of multiple proportions

Question 37

states that proportions by weight when chemical reaction takes place can be expressed in terms of **small, integral, multiple of fixed numbers**, called as “combining weights” or “equivalent weights

Answer 37

law of combining weights | * law of reciprocal proportions * law of equivalence

Question 39

consists of a positively charged core called "nucleus"

Answer 39

atom

Question 40

who discovered protons? | the positive part

Answer 40

Rutherford

Question 41

who discovered electrons? | the negative part

Answer 41

Thomson

Question 42

who discovered neutrons? | the uncharged part

Answer 42

James Chadwick

Question 43

it is the basic unit that compose a matter

Answer 43

atom

Question 44

fundamental unit of structure of matter that can enter into a chemical reaction

Answer 44

atom

Question 45

no. of protons + no. of neutrons

Answer 45

atomic mass or weight

Question 46

no. of protons in the element nucleus

Answer 46

atomic number

Question 47

atoms of same element with the **same atomic number** (same **p**roton), but different atomic mass

Answer 47

isoto**p**es

Question 48

atoms of different element but with same **atomic mass** (mass num**bar**s)

Answer 48

iso**bar**

Question 49

atoms of different element but with the same **n**eutrons

Answer 49

isoto**n**es

Question 50

coined the word "atomo" → “tiny indivisible particles”

Answer 50

Democritus

Question 51

proposed the theory that is based on facts and evidences that **atoms enter into the combination with other atoms** to form compounds, but will remain unchanged during ordinary chemical reactions | atom is a "billiard ball" → a hard, indestructible sphere

Answer 51

John Dalton Theory

Question 52

what laws does John Dalton Theory supports?

Answer 52

* law of definite proportion * law of multiple proportion

Question 53

based on additional experimental evidence of “alpha scattering elements”

Answer 53

Rutherford Model

Question 54

# ATOMIC STRUCTURE MODEL tom is a spherical mass containing electrons & this spherical mass is positive but is made neutral | atom is like a "plum pudding"

Answer 54

Thompson Model | or raisin bread model

Question 55

according to this, the positive charges (protons) are concentrated in the nucleus, and the region outside the nucleus are the negative charges (electrons)

Answer 55

Rutherford Model

Question 56

what experiment did Rutherford used to prove that most of atom is in a very small space called the atomic nucleus?

Answer 56

Geiger Marsden Experiment | or Gold Foil Experiment

Question 57

other name for Bohr Model

Answer 57

planetary model

Question 58

in this model, protons are in the nucleus and the electrons are in the orbitals that surround the nucleus

Answer 58

Bohr Model