Chemistry Exam Study Guide

Front 1

What is a chemical change?

Back 1

A change that that produces new substances.

Front 2

What is a physical change?

Back 2

A change that does not produce a new substance.

Front 3

What is the formula for calculating density?

Back 3

grams per cubic centimeter
(g/cm3)-solids

Front 4

What are properties of Metals?

Back 4

malleable,ductile,luster,great conducter of electricity and heat

Front 5

What are properties of Nonmetals?

Back 5

brittle,not malleable,not ductile,poor conductors of heat/electricity

Front 6

What other separation techniques can be used to seperate mixtures?

Back 6

filtering,decanting,chromatography

Front 7

What are the two parts of a solution? Define both.

Back 7

The solvent is the substance that does the dissolving,the solute is the substance that gets dissolved.

Front 8

Define molecule.

Back 8

The smallest particle of a substance that retains the properties of the substance and is composed of one or more atoms.

Front 9

Define atom.

Back 9

The smallest unit of matter

Front 10

What is boiling point?

Back 10

The temperature at which a liquid changes to a vapor.

Front 11

What is melting point?

Back 11

The temperature at which a solid material becomes a liquid.

Front 12

What is matter?

Back 12

Anything that has mass and occupies space.

Front 13

What are valence electrons?

Back 13

Electrons in the outermost shell of an atom. The electrons that are gained or lost in a chemical reaction.

Front 14

What do group numbers have to do with valence electrons?

Back 14

For main group elements, the number of Valence electrons equals the element's group number.

Front 15

Where are protons located in an atom?

Back 15

Located at the center of the atom in the nucleus. Neutrons are also located here.

Front 16

Where are neutrons located in an atom?

Back 16

Located at the center of the atom in the nucleus. Protons are also located here.

Front 17

Where are electrons located in an atom?

Back 17

Located outside of the nucleus.

Front 18

What group is the element Calcium located?

Back 18

Alkali Earth

Front 19

What group is the element Lithium located?

Back 19

Group: Alkali Met.

Front 20

What group is the element Iron located?

Back 20

Group: Trans. Met.

Front 21

What group is the element Neon located?

Back 21

Group: Noble Gas
Hint: The elements Xenon and Helium are also a part of this group.

Front 22

What group is the element Chlorine located?

Back 22

Group: Halogen

Front 23

What group is the element Sulfur located?

Back 23

Group: Non-Metal, Chalcogen

Front 24

What group is the element Aluminum located?

Back 24

Group: Metal

Front 25

What group is the element Xenon located?

Back 25

Group: Noble Gas
Hint: The elements Neon and Helium are also a part of this group.

Front 26

What group is the element Helium
located?

Back 26

Group: Noble Gas
Hint: The elments Xenon amd Neon are also a part of this group.

Front 27

What group is the element Hydrogen located?

Back 27

Group: Non-Metal

Front 28

What information does the Periodic Table of elements provide to anyone studying chemistry?

Back 28

The Periodic Table helps to predict chemical reactions. It is a helpful arrangement of the elements according to both their atomic number and the number of electrons in the outer orbit.

Front 29

What is a "triple beam balance" used for?

Back 29

A measuring insturment used to determine the mass of materials.

Front 30

List examples of physical properties of matter.

Back 30

color, smell, freezing point, boiling point, melting point infra-red spectrum, attraction (paramagnetic) or repulsion (diamagnetic) to magnets, opacity, viscosity and density.

Front 31

Describe the pH Scale in terms of acids and bases.

Back 31

1-6: acids
7: neutral
8-14: bases

Front 32

Name the 5 parts of an atom. Write the electrical charge(if it applies)

Back 32

Electron, Nucleus, Neutron, Proton, Orbit (Shell)

Front 33

What is a chemical equation?

Back 33

An equation that expresses a chemical reaction. The symbols on the left of the equation denoting the substances before, and those on the right those after, the reaction.

Front 34

List an example of a chemical property of matter.

Back 34

heat of combustion, reactivity with water, PH, and electromotive force.

Front 35

Define pure substance.

Back 35

Matter that contains only one chemical substance.

Front 36

Define element.

Back 36

A pure substance which cannot be broken down by further chemical techniques.

Front 37

Define compound.

Back 37

A pure substance composed of two or more different atoms chemically bonded to one another.

Front 38

What is the difference between mixtures and compounds?

Back 38

A mixtures have two or more substances mixed together without chemical changes, while compounds have two or more substances bonded together by chemical reaction.

Front 39

In the following chemical equation, list the reactant(s:
NaCl + AgNO3

Back 39

Sodium-Chlorine

Front 40

In the following chemical equation, list the reactant(s:
AgCl+ NaNO3

Back 40

Silver Nitrate

Front 41

Which seperation technique would be best to use if you wanted to seperate a mixture of sand and salt?

Back 41

Filtration

Front 42

What is solubility?

Back 42

A substance's ability to dissolve

Front 43

What formula would you use to calculate the volume of a regular solid?

Back 43

Length x Width x Height (l x w x h)