Chemistry #1

Question 1

Atom

Answer 1

The smallest unit of an element

Question 2

Nucleus

Answer 2

The central part of an atom and is made out of protons and Neutrons. The Nucleus is where the most mass is in an atom.

Question 3

Protons

Answer 3

A positively charged particle located in the nucleus of an atom. (+) It has a mass of 1 AMU (Atomic Mass Unit)

Question 4

Neutron

Answer 4

An uncharged particle located in the nucleus of an atom (-+). It has a mass of 1 AMU (Atomic Mass Unit)

Question 5

Electron

Answer 5

A negatively charged particle which orbits around the nucleus inside shells. It has a mass of 0 AMU (Atomic Mass Unit).

Question 6

Molecule

Answer 6

A group of atoms (either the same or different) which are bonded together.

Question 7

Quark

Answer 7

What makes up all particles (Electrons, Neutrons & Protons etc)

Question 8

Alkali Metals

Answer 8

The reactive type of element. These types of elements are extremely unstable because the element’s valence shell isn’t filled to capacity.

Question 9

Noble Gases

Answer 9

The least reactive type of element. These types of elements are very stable because the element’s valence shell is filled.

Question 10

Cation

Answer 10

A positively charge ion.

Question 11

Anion

Answer 11

A negatively charged ion.

Question 12

Valence Shell

Answer 12

The outermost orbit/shell of an atom

Question 13

Valence Electrons

Answer 13

The number of electrons on the outermost shell

Question 14

Ion

Answer 14

An unbalanced atom which is either positively or negatively charged overall.

Question 15

Octet

Answer 15

A group of eight valence electrons making an atom stable.

Question 16

Atomic Number

Answer 16

This is the smaller number on an element on the periodic table. It determines the number of protons.

Question 17

Chemical Symbol

Answer 17

A one or two letter symbol which represents an element on the periodic table.

Question 18

Compound

Answer 18

Compounds are made up of 2 or more different types of atoms which are chemically bonded together.

Question 19

Elements

Answer 19

Elements are made up of only one type of atom. Therefore, they are pure and quite rare.

Question 20

MIxture

Answer 20

A mixture is a combination of substances which keep their properties.

Question 21

Hydrogen

Answer 21

The lightest and least dense natural element on the Periodic Table.

Question 22

Metals

Answer 22

Metals are the category for most of the elements on the Periodic table. All metals are conductive of electricity, have high melting points, are shinny and can be bent easily.

Question 23

Non-Metals

Answer 23

Non-metals are all located on the left side of the periodic table. They have the opposite features of Metals; are not conductive of heat or electricity, have low melting points, are dull and shatter when being bent.

Question 24

Metalloids

Answer 24

Metalloids have characteristics of both Metals and Non-metals.

Question 25

Periodic Table

Answer 25

Is the system used to group elements together and orders the elements based on the number of protons they each had.

Question 26

Group

Answer 26

Groups are the columns on the Periodic tables. They determine the number of valence electrons are in an atom.

Question 27

Period

Answer 27

Periods are the rows on the Periodic table. They determine the number of shells an atom.

Question 28

Isotopes

Answer 28

Two or more forms of an element where the amount of protons remain the same but the neutrons change.