Ch1

Question 1

__is the term for any material that has Mass and Volume

Answer 1

Matter

Question 2

Name the basic states of matter are there

Answer 2

Solid liquid gas

Question 3

solid, liquid, and gas. Examples: Wood, stones, and metals
and their molecules or atoms are all classified as____

Answer 3

matter.

Question 4

is the smallest particle of an element that retains the unique properties of
that element.

Answer 4

Atom

Question 5

There are different types of atoms (e.g., carbon, hydrogen, and oxygen atoms).
Each type of atom is the building block of a certain__.

Answer 5

chemical element

Question 6

Amount of matter in an object

Answer 6

Mass

Question 7

Force that gravity exerts on an object

Answer 7

Weight

Question 8

___of an object does not depend on location; it is Constant everywhere and
does not change when an object’s location changes.

Answer 8

Mass

Question 9

___changes with
the location because gravity changes.

Answer 9

Weight

Question 10

Unit of mass and weight

Answer 10

Kg, N

Question 11

Physical process is between

Answer 11

Substance and mixture

Question 12

___Pure form of matter that consists of only one entity. Two types of pure substances name them

Answer 12

Substance. Elements and compounds

Question 13

are pure substances made up of one kind of atom-atom cannot be broken down into simpler substances by chemical means.

Answer 13

Elements

Question 14

Examples of
elements include;

Answer 14

hydrogen (H2), carbon (C), oxygen (O2), and sodium (Na).

Question 15

are substances consisting of atoms or ions of two or more different
elements in definite proportions and joined by chemical bonds.

Answer 15

Compounds

Question 16

Which can and can’t be broken down by chemical mehtods/means. Elements and compounds

Answer 16

Elements CANNOT be broken down. Compounds CAN BE broken down into simpler substances by chemical methods

Question 17

The newly formed entities (broken down substances) which means its compounds will have a ___ properties than the original compound.

Answer 17

completely different

Question 18

Examples of compounds include;

Answer 18

Water (H2O), table salt
(NaCl), and methane (CH4).

Question 19

The various materials (matters) we see around us are___ or mixtures of
substances.

Answer 19

substances

Question 20

are two or more substances mixed without chemical reaction and can be
separated physically into their original components.

Answer 20

Mixtures

Question 21

___are those whose components cannot be distinguished by the naked eye.

Answer 21

Homogeneous mixture

Question 22

Which mixture is these Examples include; rainwater, tap water, air, aqueous sugar solution,
etc.

Answer 22

Homogeneous

Question 23

___ are those whose components can be distinguished by the naked eye.

Answer 23

Heterogeneous

Question 24

Which mixture is these Examples include; salads, sand in water, concrete, etc.

Answer 24

Heterogeneous

Question 25

A property that can be observed and measured without changing the material's composition.

Answer 25

Physical

Question 26

Which property is these examples for : Melting Point, Boiling Point, Solubility, Temperature, Mass, Volume, Density, Viscosity, Electrical conductivity, Thermal conductivity, etc.

Answer 26

Physical

Question 27

A property that can only be observed by changing the composition of the material.

Answer 27

Chemical

Question 28

A property that can only be observed by changing the composition of the material.

Answer 28

Chemical

Question 29

Which property is this Examples: Flammability, Combustibility, Corrosion, Toxicity, Reactivity, Acidity, Basicity, etc.

Answer 29

Chemical

Question 30

___: A change in the visible appearance, without changing the composition of the material.

Answer 30

Physical change

Question 31

: A change in the composition of the material and a new form of matter is formed. Chemical changes are also known as chemical reactions.

Answer 31

Chemical change

Question 32

Matter exists in three fundamental states, and their interchange depends on the__ and___ to which the matter is subjected.

Answer 32

temperature, pressure

Question 33

Which state of matter is this , have definite shapes and definite volumes. • The molecules in the matter are close together and connected by strong bonding forces. And can be crystalline or amorphous.

Answer 33

Solid

Question 34

Which state of matter have indefinite shapes but definite volumes. They assume the shape of their containers, such as a drink in a can. • The molecules in a liquid matter are far from each other and connected by weak bonding forces.

Answer 34

Liquid

Question 35

Which state of matter have indefinite shapes and indefinite volumes. The molecules in the matter are very far from each other and connected by very weak bonding forces. The volume of the matter strongly depends on their temperature and pressure. have a unique property: compressibility (opposite to expansibility).

Answer 35

Gases

Question 36

Matter can often change from one physical state to another through a

Answer 36

physical change.

Question 37

liquid water can be heated to form a gas called

Answer 37

steam

Question 38

___is the transformation of a system from one state of matter (phase) to another one by either change in the system heat or pressure.

Answer 38

Phase transition

Question 39

Phase transition occurs via the following

Answer 39

physical processes.

Question 40

is a physical process (phase transition) in which the substance changes from a solid to a liquid by heating.

Answer 40

Melting

Question 41

is when the substance changes from liquid to gas by heating.

Answer 41

Boiling or vaporizing

Question 42

is when the substance changes from solid to gas by heating without becoming a liquid.

Answer 42

Sublimation

Question 43

is when the substance changes from gas to solid by cooling without becoming a liquid.

Answer 43

Deposition

Question 44

Sodium chloride is dissolved in water. What’s the solute and solvent

Answer 44

Sodium chloride is solute and water is solvent

Question 45

o___ is the component of a solution in smaller amounts. o___ is the component of a solution in greater amounts.

Answer 45

Solute ,Solvent

Question 46

Solutions may exist in any of the three states of matter; that is, they may be gases, liquids, or solids (according to the state of the_____).

Answer 46

solvent