Dimensional Analysis

Question 1

Measurement

Answer 1

Quantitative descriptions of something.

Question 2

Atoms

Answer 2

Buliding blocks of matter; The basic unit of a chemical element.

Question 3

Elements

Answer 3

A pure substance that cannot be broken down into simpler substances by chemical changes.

Question 4

Compound

Answer 4

Made of 2 or more different kinds of elements

Question 5

Frame

Answer 5

A basic structure that underlies or supports a system, concept, or text. In discussion, the framework consists of a combination of shared context and rules.

Question 6

Theory

Answer 6

A well substantiated, comprehensive, testable explanation (model) of a particular aspect of nature. Makes accurate predictions about a variety of different experiments. Not yet falsified/proved wrong. Can be refined.

Question 7

Direct Observation

Answer 7

Looking at the event or occurrence as it happens.

Question 8

Indirect Observation

Answer 8

Looking for evidence of the occurrence.

Question 9

Brownian Motion

Answer 9

Small objects moving around in water or perpetual random motion of objects due to impacts of atoms and molecules in the surrounding medium.

Question 10

Absolute zero

Answer 10

The temperature at which molecular motion ceases; the lower possible temperature.

Question 11

Temperature

Answer 11

A measure of the thermal energy in a system; how much atoms and molecules are moving.

Question 12

Subatomic particles

Answer 12

Particles that make up atoms including protons, neutrons, and electrons.

Question 13

Nucleus

Answer 13

The dense, positively charged (and very small) center of the atom; neutral subatomic particle found in the nucleus of most atoms.

Question 14

Electron

Answer 14

The negatively charged pieces of the atom that can be found somewhere outside of the nucleus in the atom.

Question 15

Orbital

Answer 15

The spatial distribution of the electron.

Question 16

Atomic Theory

Answer 16

The current scientific model for how atoms work, which includes the quantum mechanics of subatomic particles.

Question 17

Atomic number

Answer 17

Number of protons in the nucleus of an atom. Shown on the periodic table and used in ordering it.

Question 18

Atomic symbol

Answer 18

The average mass of the atoms of an element. Shown on the periodic table.

Question 19

Isotope

Answer 19

Atoms of the same element containing different numbers of neutrons and therefore having different masses.

Question 20

Periods

Answer 20

Horizontal row of elements on the periodic table.

Question 21

Groups

Answer 21

Vertical column of elements on the periodic table.

Question 22

Molecular formula

Answer 22

A chemical formula that indicates numbers of atoms of each element in one molecule of a substance

Question 23

Subscript

Answer 23

Tells you how many of the preceding atom are present in the moleculesqq