Chemistry

Question 1

Matter

Answer 1

Matter is everything that is not energy

Question 2

Atomic Particles

Answer 2

Examples of atomic particles are protons, neutrons, and electrons

Question 3

Electron

Answer 3

An electron stable subatomic particle with a charge of negative electricity

Question 4

Neutron

Answer 4

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

Question 5

Proton

Answer 5

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

Question 6

AMU

Answer 6

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

Question 7

Electron Shell

Answer 7

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

Question 8

Compound

Answer 8

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

Question 9

Periodic Table

Answer 9

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

Question 10

Atomic Number

Answer 10

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

Question 11

Atomic Mass

Answer 11

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

Question 12

Alchemist

Answer 12

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

Question 13

Investigation

Answer 13

Investigation is activity aimed at finding information

Question 14

Observation

Answer 14

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

Question 15

Scientists

Answer 15

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

Question 16

Element

Answer 16

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

Question 17

Atom

Answer 17

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

Question 18

Chemical Symbol

Answer 18

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

Question 19

Cation

Answer 19

A positively charged ion.

Question 20

Ion

Answer 20

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

Question 21

Anion

Answer 21

A negatively charged ion.

Question 22

Metalloids

Answer 22

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

Question 23

Transition Metals

Answer 23

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

Question 24

Luster

Answer 24

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

Question 25

Metals

Answer 25

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

Question 26

Non-metals

Answer 26

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

Question 27

Periodic Law

Answer 27

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..

Question 28

Brittle

Answer 28

Hard but liable to break easily.

Question 29

Shells

Answer 29

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

Question 30

Valence

Answer 30

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