Chem

Question 1

is the physical material of the universe. It is anything that occupies space and has mass

Answer 1

Matter

Question 2

has a define volume, with particles that cohere rigidly. the shape can be independent of its container

Answer 2

Solid

Question 3

Materials which exist in regular, repeating geometric patterns.

Answer 3

Crystalline

Question 4

solids with no shape or form geometric configuration is irregular

Answer 4

Amorphous solid

Question 5

has define volume but no specific shape; it assumes the shape of its container; very slightly compressible

Answer 5

Liquid

Question 6

has no fixed volume or shape; it takes on the shape and volume of its container

Answer 6

Gas

Question 7

is a form of matter with definite composition and distinct properties

Answer 7

Pure Substance

Question 8

a pure substance made up of one kind of atom.
are substances that cannot be decomposed into simpler substances by chemical or physical means

Answer 8

Element

Question 9

is a substance that is composed of two or more elements chemically combined in definite and constant proportions.

Answer 9

Compound

Question 10

is a combination of to or more substance in variable proportions

Answer 10

Mixture

Question 11

the same properties throughout the system or having one phase only; composition can be varied. It is called

Answer 11

Homogeneous ,,, Solution

Question 12

the individual substances ramain essentially the same as they were before being mixed; or having two or more phases

Answer 12

Heterogeneous

Question 13

particles can be seen through the Tyndall effect

Answer 13

Colloids

Question 14

the parts may be distinguished since the materials are heavy enough to settle down

Answer 14

suspension

Question 15

parts are very large, distinguishable even under an unaided eye.

Answer 15

Coarse

Question 16

are those qualities or characteristics possessed by substance by which we are able to identify the form of matter from another

Answer 16

Properties

Question 17

are those properties that can be observed without changing the composition of the substance

Answer 17

Physical Properties

Question 18

having the ability to change into new and completely different substance

Answer 18

Chemical Properties

Question 19

involves a change in one or more physical properties, but no changes in the fundamental components that make up the substance.

Answer 19

Physical Change

Question 20

involves a change which result in the disappearance of the substance and formation of new substance

Answer 20

Chemical Change

Question 21

Chemical change are called

Answer 21

Reaction

Question 22

refers to how close a measurements is the true or correct value for the quantity

Answer 22

Accuracy

Question 23

refers to how close a set of measurements for a quantity is to one another, regardless of whatever the measurements are correct

Answer 23

Precision

Question 24

is defined as the mass of the substance occupying a unit volume

Answer 24

Density

Question 25

is a ratio between the density of a substance and the density of the reference substance.

Answer 25

Specific Gravity

Question 26

is the reference for solids and liquids and air for gases

Answer 26

water

Question 27

is the fundamental unit of which elements are composed

Answer 27

Atom

Question 28

Protons and neutrons are located inside nucleus and sometimes called

Answer 28

Nucleons

Question 29

the total number of protons and neutrons in the nucleus of an atom

Answer 29

Mass number

Question 30

mass number - number of protons =

Answer 30

Number of protons

Question 31

the number of protons in the nucleus of an atom

Answer 31

Atomic Number

Question 32

is a set of chemical symbols showing elements present in a compound and their relative proportions, and in some cases the structure of the compound

Answer 32

Chemical Formula

Question 33

Molecules have carbon-hydrogen bonds

Answer 33

Organic

Question 34

molecules do not contain carbon-hydrogen bonds.

Answer 34

Inorganic

Question 35

is something consisting of precisely two elements

Answer 35

binary compound

Question 36

compounds that contain metal and non-metal

Answer 36

Ionic Compound

Question 37

compounds that contain a non-metal and non-metal

Answer 37

Covalent compound

Question 38

if one of the non-metal is Hydrogen, the compound is called a __________

Answer 38

binary acid

Question 39

is compound which is made up of three elements

Answer 39

ternary Compound

Question 40

the non-metal and oxygen as a group is called a __________ and carries a negative charges

Answer 40

radical or polyatomic ions

Question 41

if the metal is replaced by hydrogen, the ternary compound is called __________

Answer 41

oxyacid