Module 3 (Test Week 4)

Question 1

Discontinuous Theory of Matter

Answer 1

The idea that matter is composed of tiny, individual particles; our eyes just can’t see the particles, so the illusion is the matter is continuous.

Question 2

Antoine Lavoisier

Answer 2

Considered to be the founder of chemistry.

Question 3

Democritus

Answer 3

Developed the discontinuous theory of matter.

Question 4

The Law of Mass Conservation

Answer 4

Matter can not be created or destroyed; it can only change forms.

Question 5

Decomposition

Answer 5

When you can divide something into smaller bundles so that each bundle is a different substance.

Question 6

Element

Answer 6

Any substance that cannot be decomposed into massive substances

Question 7

Periodic Table of the Elements

Answer 7

Information about each element all on one table; the chemist’s most important tool.

Question 8

Metals

Answer 8

Can be easily bent, have luster, and are able to conduct electricity. Elements on the left of the jagged line on the periodic table.

Question 9

Nonmetals

Answer 9

Break when bent, are lackluster, and cannot conduct electricity. Elements on the right of the jagged line.

Question 10

Metalloids

Answer 10

Have some metal purposes and nonmetal purposes ; do not worry about this at this point in time.

Question 11

Compounds

Answer 11

Substances that can be composed into elements by chemical means.

Question 12

Law of Definite Proportions

Answer 12

The proportion of elements in any compound is always the same.

Question 13

Law of Multiple Proportions

Answer 13

If two elements combine to form different compounds, the ratio of masses of the second element that react with the fixed mass of the first element will be a simple, whole-ratio number.

Question 14

Isotopes

Answer 14

Certain atoms within an element can be heavier than other atoms in the same element.

Question 15

Joseph Proust

Answer 15

Developed the law of definite proportions.

Question 16

Dimensionless quantities.

Answer 16

Numbers that have no units.

Question 17

John Dalton.

Answer 17

Developed his “atomic theory”

Question 18

The element abbreviation which appears is usually either the _____ or the _____ _____ letters of the elements _____ or _____ name

Answer 18

1. First
2. First two
3. English
4. Latin

Question 19

Even thought _____ is left of the _____ _____, it is always considered a _____

Answer 19

1. Hydrogen
2. Jagged Line
3. Nonmetal

Question 20

Dalton’s Atomic Theory

Answer 20

1. All elements are composed of small, indivisible particles called “atoms”.
2. All atoms of the same element have exactly the same properties.
3. Atoms of different elements have different properties.
4. Compounds are formed when atoms are joined together. Since atoms are indivisible, they can only join together in simple, whole-number ratios.

Question 21

Continuous Theory of Matter

Answer 21

The thought that you can cut something in half and it will never completely go away, it will just get smaller and smaller.

Question 22

Molecules

Answer 22

Groups that are formed when atoms join together to form compounds.

Question 23

Chemical Symbol

Answer 23

The abbreviation for an atom.

Question 24

Chemical Formula

Answer 24

Tells you how many of each atom make up the molecule you are interested in.

Question 25

Ionic

Answer 25

A compound that contains one metal atom and one nonmetal atom that can conduct electricity when dissolved in water.

Question 26

Covalent

Answer 26

A compound that contains only nonmetal atoms that can not conduct electricity when dissolved in water.

Question 27

Distilled (water)

Answer 27

About 99% pure water.

Question 28

If the compound contains at least one _____ atom and at least one _____ atom, the compound is _____.

Answer 28

1. Metal
2. Nonmetal
3. Ionic

Question 29

If a compound is made up of solely _____ atoms, the compound is _____.

Answer 29

1. Nonmetal

2. Covalent

Question 30

How do you name an ionic compound ?

Answer 30

1. Start with the name of the first atom in the molecule.
2. Take the next atom in the molecule and replace the ending with an “ide” suffix.
3. Putting these two names together gives you the compounds name.

Question 31

How do you classify a compound as covalent ?

Answer 31

The same as ionic, but you add a prefix to the first one of there is more than one atom. You always add a prefix to the second one !!!!

Question 32

One - mono
Two - di
Three - Tri
Four - tentra 
Five - penta
Six - hexa
Seven - hepta
Eight - octa
Nine - Nona
Ten - deca

Answer 32

:)