Quiz 2A

Question 1

Anything that takes up space and has mass

Answer 1

Matter

Question 2

from nothing

Answer 2

ex nihilio

Question 3

Organization of matter

Answer 3

Pure substances–

Mixtures–

Question 4

Can be measured without changing the material into another substance

Answer 4

Physical property

Question 5

Describes how the particles are packed into a material

Answer 5

Density

Question 6

Describes how easily a material can be hammered into shapes

Answer 6

Malleability

Question 7

describes how easily materials can be drawn into thin wires

Answer 7

Ductility

Question 8

Describes the ability of a material to transfer heat or electricity between its particles

Answer 8

Conductivity

Question 9

Physical properties

Answer 9

color, odor, taste, shape, size, solubility, hardness, state, melting point, boiling point

Question 10

Evident only when the material changes to another substance

Answer 10

Chemical properties

Question 11

Chemical properties

Answer 11

Flammable- burns
Reactive- acts upon another
Oxidizes- combines with oxygen (or other nonmetals)

Question 12

Two or more substances physically placed together, not chemically joined

Answer 12

Mixture

Question 13

Only one kind of particle

Answer 13

Pure Substances

Question 14

Different kinds of particles are visible; Example: sand and rocks

Answer 14

Heterogeneous

Question 15

Different kinds of particles are NOT visible; Example: salt, water

Answer 15

Homogeneous

Question 16

Another name for a homogeneous mixture

Answer 16

Solution

Question 17

Solution vs. Pure Substance

Answer 17

A pure substance has a fixed composition

A mixture has a variable composition

Question 18

Two types of Pure Substances

Answer 18

Elements

Compounds

Question 19

Substances that cannot be broken down into simpler substances by ordinary chemical means

Answer 19

Elements

Question 20

The smallest “piece” of an element that is still the element

Answer 20

Atom

Question 21

What is an atom made up of

Answer 21

Protons, Neutron, and Electrons (all are subatomic particles)

Question 22

Three categories of elements

Answer 22

Monatomic: He
Diatomic: O2
Polyatomic: S8

Question 23

1. One or two letters represent the name of an element
2. The first letter is always uppercase
3. The second letter is always lowercase

Answer 23

Berzelius’s System

Question 24

Two or more atoms that are chemically bonded together

Answer 24

Molecules

Question 25

Can be expressed by a “FORMULA” which tell the number of atoms of each element present

Answer 25

Compounds

Question 26

Tells the type and number of atoms that are present in one molecule of a compound

Answer 26

Formula

Question 27

A number that indicates the amount of atoms or groups of atoms in a formula

Answer 27

Subscript

Question 28

A number in front of a formula which tells how many molecules or atoms are present

Answer 28

Coefficient