Final

Question 1

Science that studies the matter and the changes that it undergoes.

Answer 1

Chemistry

Question 2

Is the ability to do work or produce heat.

Answer 2

Energy

Question 3

Physical combination of two or more substances in which they retain their distinct identifies.

Answer 3

Mixture

Question 4

Liquid to gas

Answer 4

Evaporation

Question 5

Gas to liquid

Answer 5

Condensation

Question 6

Gas to solid

Answer 6

Deposition

Question 7

Solid to gas

Answer 7

Sublimation

Question 8

Solid to liquid

Answer 8

Melting

Question 9

Liquid to solid

Answer 9

Freezing

Question 10

A single kind of matter with a specific composition and properties.

Answer 10

Pure substance

Question 11

Name 3 homogeneous

Answer 11

Sea water
Tequila
Air

Question 12

Name 3 heterogeneous

Answer 12

Water and oil
Sandwich
Salad
Gasoline

Question 13

Anything that has mass and takes up space.

Answer 13

Matter

Question 14

Is a type of change in which the forman of matter is altered but one substance is not transformed into another. Characteristic that you can see and touch,

Answer 14

Physical change

Question 15

Ability of a substance. Is a process when one or more substances are altered into one or more new and different substances.

Answer 15

Chemical change

Question 16

Any of various unit of matter below the size of an atom, including the elementary particles and hadrons.

Answer 16

Subatomic particles

Question 17

Atoms of the same element with different number of neutrons and therefore they differ in mass.

Answer 17

Isotopes

Question 18

Is a value that is used when describing the energy levels available to atoms and molecules.

Answer 18

Quantum numbers

Question 19

Form of notation which shows how the electrons are distributed among the atomic orbitals and energy levels.

Answer 19

Electronic configuration

Question 20

Notations used to show how the orbitals of a subshell are occupied by electrons.

Answer 20

Diagram of orbitals

Question 21

Each new electron added to an atom, will enter in the available orbital with less energy.

Answer 21

Aufbau’s principle

Question 22

One electron will enter each orbital with a parallel pin until all orbitals have one electron and only them will a second electron be added to those orbitals.

Answer 22

Hand’s rule

Question 23

Electrons in the same atom cannot have the same four quantum numbers (they must have opposite spins)

Answer 23

Paulli’s rule

Question 24

Is generally stated as being the total distance from an atom’s nucleus to the outermost orbital of electron.

Answer 24

Atomic radius

Question 25

Is the quantity of energy than an isolated, gaseous atom in the ground electronic state must absorb to discharge an electron, resulting in a cation.

Answer 25

Ionization energy

Question 26

Is the change in energy os a neutral atom when an electron is added to the atom to form a negative ion.

Answer 26

Electron affinity

Question 27

Is the force that holds two atoms together.

Answer 27

Chemical bond

Question 28

States that atoms tend to gain, lose or share electrons in order to acquire a full set of valance electrons.

Answer 28

Octet rule

Question 29

Force that holds ions together with opposite charges.

Answer 29

Ionic bond

Question 30

Attraction force between the nuclei of non-metals and the pair of electrons that is shared between them.

Answer 30

Covalent bond

Question 31

Electrostatic attraction in which a hydrogen atoms forms a bridge between two electronegative elements such as F, O and N.

Answer 31

Hydrogen bond

Question 32

- Retains a fixed volume and shape. - Little free space between particles. - Rigid: particles cannot move.

Answer 32

Solid

Question 33

-Assumes the shape of part of the container which it occupies.

Answer 33

Liquid

Question 34

- Has no fixed shape and no foxed volume. | - Have lower density.

Answer 34

Gas

Question 35

Mention 3 separation methods.

Answer 35

- Paper chromatography - Filtration - Evaporation

Question 36

It is used to identify chemicals on foods or inks.

Answer 36

Paper chromatography

Question 37

Is used in water treatment plants, where water from rivers is filtered to remove solid particles.

Answer 37

Filtration

Question 38

Separate mixture(solution) of a soluble and a solvent. Heating the solution until the solvent evaporates (turns into a gas)

Answer 38

Evaporation

Question 39

- malleable - high densities - solid - good conductors

Answer 39

Metals

Question 40

- low densities - low melting - poor conductors - brittle

Answer 40

Non-metals

Question 41

- semi conductors - may luster - solid or liquids

Answer 41

Metalloids