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Flashcards in Chemistry Deck (30):
1

Matter

Matter is everything that is not energy

2

Atomic Particles

Examples of atomic particles are protons, neutrons, and electrons

3

Electron

An electron stable subatomic particle with a charge of negative electricity

4

Neutron

A neutron is subatomic particle of about the same mass as a proton but without an electric charge

5

Proton

A proton is a positive electric charge equal in magnitude to that of an electron

6

AMU

AMU is unit of mass used to express atomic and molecular weights

7

Electron Shell

An electron shell is the outside part of an atom around the atomic nucleus

8

Compound

A compound is a substance formed when two or more chemical elements are chemically bonded together

9

Periodic Table

The periodic table is a table of the chemical elements arranged in order of atomic number

10

Atomic Number

Atomic number is the number of protons in the nucleus of an atom

11

Atomic Mass

Atomic mass is the mass of an atom of a chemical element expressed in atomic mass units

12

Alchemist

Alchemists are golden day chemists who mixed chemicals and tried to change ordinary metals into gold.

13

Investigation

Investigation is activity aimed at finding information

14

Observation

Observation is information obtained by the use of our senses or measuring instruments

15

Scientists

Scientists are people skilled in or working in the fields of science

16

Element

An element is a pure substance made up of only one type of atom

17

Atom

An atom is a very small particle that makes up all things. Atoms have the same properties as the objects they make up.

18

Chemical Symbol

A chemical symbol is the standard way that scientists write the names of the elements, using either a capital letter or a capital followed by a lowercase letter

19

Cation

A positively charged ion.

20

Ion

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

21

Anion

A negatively charged ion.

22

Metalloids

A metalloid is any chemical element which has properties in between those of metals and nonmetals.

23

Transition Metals

Any of the set of metallic elements occupying a central block in the periodic table.

24

Luster

Luster is the way light interacts with the surface of a crystal, rock, or mineral.

25

Metals

Elements that form cations when compounds of it are in solution and oxides of the elements form hydroxides rather than acids in water.

26

Non-metals

A chemical element that lacks the characteristics of a metal and that is able to form.

27

Periodic Law

A law stating that the elements, when listed in order of their atomic numbers, fall into recurring groups, so that elements with similar properties occur at regular intervals..

28

Brittle

Hard but liable to break easily.

29

Shells

In chemistry an electron shell, may be thought of as an orbit followed by electrons around an atom's nucleus.

30

Valence

In chemistry the valence of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules.