Atoms

Question 1

Atoms

Answer 1

The smallest component of an element made up of subatomic particles, and the basic building blocks of all matter

Question 2

Structure of an atom

Answer 2

proton in the middle with neutrons

The outer shell is electrons

Question 3

Where metals are on the periodic table

Answer 3

Mostly center

Question 4

What does period mean on the periodic table

Answer 4

An arrangement of atoms in increasing atomic number, showing trends in the elements

Question 5

Be aware of flame test

Answer 5

The flame test helped our knowledge of the reactions of different chemicals, such as the number of electrons in the outermost shell of an atom determines its reactivity.

Question 6

Ions

Answer 6

Different number of protons to electrons

Question 7

Anions

Answer 7

An ion with a negative charge - there are more electrons then protons

Always non-metals

Question 8

Valency table

Answer 8

Tells us ions

Tells us how many elements have changed their charge

Question 9

Element

Answer 9

A group of the same type of atoms

Question 10

Compound

Answer 10

Two or more different atoms chemically combined

Question 11

Mixture

Answer 11

Different compounds or elements put together without chemically combining

Question 12

Atomic number

Answer 12

The number of protons contained in the nucleus of the atom

Question 13

Mass number

Answer 13

The number of nucleons in the nucleus of an atom

Question 14

Atomic mass

Answer 14

The weighted mean of the different isotopes relative to their abundance measured in atomic mass units is approximately the same mass as the number

Question 15

Subatomic particles

Answer 15

The small particles that make an atom

Question 16

Nucleons

Answer 16

The centre of an atom contains protons and neutrons

Question 17

Proton

Answer 17

The positive subatomic particles contained inside the nucleus of an atom, the number of which tells us which type of atom it is.

Question 18

Electron

Answer 18

The negative subtopic particles found in the shell of an atom circling the nucleus

Question 19

Shell

Answer 19

The energy levels were electrons. Sit orbiting the nucleus

Question 20

Valence electrons

Answer 20

Electrons that sit in the outermost shell

Question 21

Neutral

Answer 21

The number of protons and electrons is equal in an atom

Question 22

Isotope

Answer 22

Naturally happens

When there are more neutrons than protons

same number
different mass number but same atomic number

Question 23

Neutral

Answer 23

The number of protons and electrons is equal in an atom

Question 24

Charge

Answer 24

The sum of the number of positive and negative subatomic particles

Question 25

Lattice

Answer 25

A substance made from cations and anions, where attractions create a lattice arrangement

Question 26

Cation

Answer 26

An ion with a positive charge - there are more protons than electrons Always metals

Question 27

metals

Answer 27

any of various substances (as gold, tin, or copper)

Question 28

non - metals

Answer 28

poor thermal conductors poor electrical conductors brittle solids little or no metallic lustre gain electrons easily dull not metallic - shiny although they may be colourful

Question 29

metalloids

Answer 29

Elements between the metals and non-metals on the periodic table that exhibit characteristics of both groups

Question 30

What does the group mean on the periodic table

Answer 30

The vertical groupings of elements contained in the periodic table 1 to 18, that exhibit similar chemical properties

Question 31

Properties

Answer 31

A property or characteristic of an element that is observed

Question 32

Number of atoms in a compound

Answer 32

to be able to explain what elements joined together to create another such as hydrogen (water) H2O - 2 hydrogen 1 Oxygen

Question 33

properties of metal

Answer 33

Lustrous hard high density high tensile strength high melting and boiling points Good conductors of heat and electricity

Question 34

Noble Gases

Answer 34

Elements in group 18 of the periodic table all contain a full outer shell electronic configuration, and are non-reactive

Question 35

Alkali Metals

Answer 35

Elements in group 1 of the periodic table which are highly reactive found as an atom as the are highly reactive

Question 36

electronic configuration

Answer 36

The number of electrons contained in each shell of an atom

Question 37

BE able to label on the periodic table helium - atomic number - symbol - mass number - number of protons - number of neutrons - number of electrons

Answer 37

= 2 = HE = 4 = 2 = 2 = 2

Question 38

BE able to label on the periodic table Boron - atomic number - symbol - mass number - number of protons - number of neutrons - number of electrons

Answer 38

= 5 = B = 11 = 5 = 6 = 5

Question 39

Neutron

Answer 39

The neutral subatomic particles contained inside the nucleus of an atom have a mass similar to a proton

Question 40

When to use the 2n

Answer 40

We use the rule 2n2 to determine the maximum number of electrons in a shell where n is the level/shell. ​ Remember, the row number of the element tells you how many electron shells. ​

Question 41

Whats the is the role for arrangement of electrons in an atom

Answer 41

2n2 = 2x12=2 2,88,2