Unit 1

Question 1

Chemical Properties

Answer 1

A property that is any ability to produce a change in the composition of the matter

Question 2

Physical Change

Answer 2

Alters the form of a substance, but does not change it to another

Question 3

Chemical Change

Answer 3

Changes into a different substance with different properties

Question 4

Precipitation

Answer 4

Solid that forms from a solution during a chemical reaction

Question 5

Extensive Properties

Answer 5

Depend on the amount of matter that is present

Question 6

Intensive Properties

Answer 6

Do not depend on the amount of matter that is present (density)

Question 7

Density

Answer 7

A ratio of mass to volume of a substance

Question 8

Chemistry

Answer 8

The study of the composition of matter and the changes it undergoes

Question 9

Atom

Answer 9

The smallest unit of an element that maintains the chemical identity of that element

Question 10

Element

Answer 10

A pure substance that can not be broken down into simpler, stable substances and is made of one type of atom

Question 11

Kinetic-Molecular Theory of Matter Rule 1

Answer 11

All matter is composed of particles in constant motion

Question 12

Kinetic-Molecular Theory of Matter Rule 2

Answer 12

Particles have spaces between them

Question 13

Kinetic-Molecular Theory of Matter Rule 3

Answer 13

All particles of matter have energy

Question 14

Kinetic-Molecular Theory of Matter Rule 4

Answer 14

Temperature is a measure of the average kinetic energy of particles, therefore, as energy/temperature levels are changed, a change in state may occur

Question 15

Kinetic-Molecular Theory of Matter Rule 5

Answer 15

Attractive forces between particles are stronger as particles are closer together

Question 16

Pure Substance

Answer 16

Has a fixed composition, all particles are identical

Question 17

Fixed Composition

Answer 17

Composed of one type of particle (atom or molecule)

Question 18

Compound

Answer 18

A pure substance with two or more elements/types of atoms combined through a chemical reaction, composed of a definite group of molecules or is chemically bonded

Question 19

Chemical Formulas of Compounds

Answer 19

Indicate the elements present in a compound and the number of relative atoms in each

Question 20

Mixture

Answer 20

A physical combination of substances, identities and properties of individuals are retained, can be physically separated, different types of particles

Question 21

Mixture VS Compound

Answer 21

1) Mixtures retain properties, compounds do not
2) Mixtures do not have a definite composition, compounds do

Question 22

Homogeneous Other Name

Answer 22

Solution

Question 23

Filtration

Answer 23

Passing a material through a porous material to separate one substance from another, uses physical property of size, gravitational filter or vacuum filter

Question 24

Distillation

Answer 24

Separation of liquid mixtures, liquid with lowest boiling point will vaporize first and the vapor is condensed into a pure liquid, uses physical property of vaporization point, collects pure liquid

Question 25

Decanting

Answer 25

Separation by pouring off liquid layer and leaving solid behind, uses physical property of state of matter and solubility

Question 26

Particles

Answer 26

Pieces of matter such as atoms, ions, or molecules

Question 27

Diatomic

Answer 27

Elements that, in their pure state, are only found in pairs

Question 28

B and C in IHNBOCF

Answer 28

Bromine and chlorine

Question 29

When Combining Acid and Water

Answer 29

Add acid to water

Question 30

Alloy

Answer 30

Metallic substances composed of two or more elements, as either a compound or a solution

Question 31

Suspension

Answer 31

A heterogeneous mixture of a finely distributed solid in a liquid

Question 32

Colloid

Answer 32

A mixture in which very small particles of one substance are distributed evenly throughout another substance

Question 33

Chromatography

Answer 33

A scientific method for separating the components found in a mixture

Question 34

Estimated Digit

Answer 34

Falls after last sig fig

Question 35

Rounding to Sig Figs

Answer 35

Use scientific notation!

Question 36

Dividing Units

Answer 36

Divide units out I guess

Question 37

Matter - Can it be separated physically?

Answer 37

Yes - mixture No - Pure substance

Question 38

Mixture - Is it a uniform composition?

Answer 38

Yes - homogeneous/solution No - heterogeneous

Question 39

Pure Substance - Can it be separated by ordinary chemical means?

Answer 39

Yes - compound (bonded atoms) No - element (single kind of atom)

Question 40

Volume and Shape

Answer 40

Solid - definite Liquid - definite volume, indefinite shape Gas - indefinite

Question 41

Arrangement

Answer 41

Solid - packed close Liquid - close, but can slide Gas - spread out as far as possible

Question 42

Movement

Answer 42

Solid - vibrate in fixed position Liquid - move past each other, flow Gas - move with great speed

Question 43

Attractive Forces/Energy

Answer 43

Solid - strong force, weak energy Liquid - strong force, medium energy Gas - weak force, strong energy

Question 44

States Energy Increase

Answer 44

Solid, liquid, gas

Question 45

States Temperature Increase

Answer 45

Solid, liquid, gas

Question 46

States Attractive Forces Decrease

Answer 46

Solid, liquid, gas

Question 47

Molecule

Answer 47

The smallest particle of a substance that has all of the physical and chemical properties of that substance, made up of one or more atoms, diatomic elements can be molecules

Question 48

Molecule VS Compound

Answer 48

Molecules have more than one atom, compounds have more than one type of atom, all compounds are molecules but not all molecules are compounds

Question 49

Chemical Methods of Separation

Answer 49

Decomposition, electrolysis