Matter and Energy

Question 1

Is a characteristics of a substance that can be observed without changing the basic idenity of the substance

Answer 1

Physical Property

Question 2

Physical Property

Are inherent to a substance and do not depend on the amount of the subtance present

Answer 2

Intrinsic properties

Question 3

Physical property

Depend on the amount of the substance present and can change when the quantity of the material changes

Answer 3

Extrinsic properties

Question 4

Is a characteristic of a substance that describes the way the substance undergoes or resists change to form a new substance

Answer 4

Chemical Property

Question 5

A process in which a substance changes its physcial appearance but not its chemical composition

Answer 5

Physical change

Question 6

A process in which a substance undergoes a change in chemical composition

Answer 6

Chemical change

Question 7

The combining substances

Answer 7

Reactants

Question 8

Substances formed

Answer 8

Products

Question 9

Phase Changes in Matter

Solid to liquid

Answer 9

Melting

Question 10

Phase Changes in Matter

Liquid to solid

Answer 10

Freezing or Solidification

Question 11

Phase Changes in Matter

Liquid to gas

Answer 11

Evaporation

Question 12

Phase Changes in Matter

Gas to liquid

Answer 12

Condensation

Question 13

Phase Changes in Matter

Solid to gas

Answer 13

Sublimation

Question 14

Phase Changes in Matter

Gas to solid

Answer 14

Deposition

Question 15

is a single kind of matter that cannot be separated into other kinds of matter by any physical means

Answer 15

Pure Substance

Question 16

Classification of elements

Physical properties of Metals

5

Answer 16

• Usually solid at room temperature
• Ductile
• Malleable
• Good conductor of heat and electricity
• Show metallic luster when polish

Question 17

Classification of elements

Chemical properties of Metals

3

Answer 17

• Combine with other metals to form an alloy
• React with non-metal to form ionic compound or salts
• Lose electron forming positive ion

Question 18

Classification of elements

Physical properties of Non-metals

8

Answer 18

• Dull and cannot be polished
• Brittle
• Poor conductor of heat and electricity
• Low melting point
• Low densities
• Some are gases, liquids or solids at room temperature
• Low tensile strength
• Not sonorous

Question 19

Classification of elements

Chemical properties of Non-metal

2

Answer 19

• Combine with non-metal to form covalent compounds
• Gain electrons forming a negative ion

Question 20

Classification of elements

Properties of Metaloids

Answer 20

• Have properties that lie between metals and non-metals
• Often look like metal but are brittle like non-metal
• Poor conductors of electricity but their conductivity increases as temperature rises

Question 21

Is a pure substance that can be broken down into two or more simpler pure substance by chemical means

Answer 21

Compound

Question 22

The difference between Organic and Inorganic Compounds

Answer 22

Organic contains carbon while Inorganic doesnt

Question 23

Classification of Compounds

Substances that dontate protons when dissolved in water

Answer 23

Acids

Question 24

Classification of Compounds

Are substances that accept protons or donate hydroxide ions in solution

Answer 24

Bases

Question 25

# Classification of Compounds are ionic compounds formed from the neutralization reaction between an acid and a base

Answer 25

Salts

Question 26

# Classification of Compounds are compounds that contain at least one oxygen aton and one other element

Answer 26

Oxides

Question 27

Is a physical combination of two or more pure substances in which each substance retains its own chemical idenity

Answer 27

Mixture

Question 28

# Properties of Mixture The composition is uniform throughout

Answer 28

Homogeneity

Question 29

# Properties of Mixture Less than 1 nanometer (nm)

Answer 29

Particle Size

Question 30

# Properties of Mixture Particles are not visible, even under a microscope

Answer 30

Visibility

Question 31

# Properties of Mixture Solutions are stable and the solute does not settle out over time

Answer 31

Stability

Question 32

# Properties of Mixture Solute particles cannot be separated

Answer 32

Filtration

Question 33

are heterogeneous mixtures where the particle size is intermediate between those in solutions are suspensions

Answer 33

Colloids

Question 34

are heterogenous mixtures where the particles are large enough to eventially settle out

Answer 34

Suspensions