Atoms And Elements💜☢️

Question 1

What are atoms ?

Answer 1

Atoms are the smallest particles of matter, that we cannot break down further by chemical.

Question 2

We know the arrangement of electron thanks to the work of the Danish physicist ….

Answer 2

Niels Bohr

Question 3

A substance made up of only one type of atom is called an

Answer 3

Element

Question 4

A substance made up of two or more types of atoms joined together by chemical bonds is called …

Answer 4

A compound

Question 5

A …. contains two or more elements or compounds that are not chemically bonded together .

Answer 5

Mixture

Question 6

What is matter ?

Answer 6

Anything that has volume,mass and occupies space

Question 7

An atom consists of 3 subatomic particles. Which are ….

Answer 7

Protons
Neutrons
Electrons

Question 8

The atomic structure consists of …..

Answer 8

A nucleus and a cloud of electron

Question 9

The nucleus of an atom consists of …… and ….

Answer 9

Protons and neutrons

Question 10

Protons are …….. charged

Answer 10

Positively

Question 11

Neutrons have ….. charge

Answer 11

No

Question 12

Electrons have a …… charge.

Answer 12

Negative

Question 13

The unit mass of both neutrons and protons is …

Answer 13

1

Question 14

…… and ….. determine the mass of an atom

Answer 14

Protons and neutrons

Question 15

The cloud of electron consists of .. and …

Answer 15

Electron and atomic shells / electron shell

Question 16

Electrons are ….. charged and have a mass of……

Answer 16

Negatively

1/1840..almost nothing

Question 17

An atom contains the same number of …. and …

Answer 17

Protons and eletrons

Question 18

Why are atoms neutral ?

Answer 18

This is because they contain the same or equal number of positively charged protons and negatively charged electrons. So their charge cancel out each other

Question 19

What is an atomic number/proton number

Answer 19

The number of protons in an atom

Question 20

Nucleon number,which is also called…..

Is the number of…. and….. in an atom

Answer 20

Mass number

Protons and neutrons

Question 21

Nucleon number =

Answer 21

protons + neutrons

Question 22

Matter exsits in 3 states. Namely …

Answer 22

Solid
Liquid
Gas

Question 23

What is the periodic table

Answer 23

It is a table of elements arranged in their order of increase proton number

Question 24

The periodic table consists of rows and columns
Rows are called….
Columns are called…

Answer 24

Periods

Groups

Question 25

The periodic table consists of .... groups

Answer 25

8

Question 26

(Group 1 to 3 )The left side of the periodic table contains .....

Answer 26

Metals

Question 26

(Group 1 to 3 )The left side of the periodic table contains .....

Answer 26

Metals

Question 27

The right side (group 4 to 8) contains ...

Answer 27

Non metals

Question 28

The block of elements between group 2 and threw are called ...

Answer 28

Transition elements/metals

Question 29

Group 1 are

Answer 29

Alkali metals

Question 30

Groups 2 are

Answer 30

Alkali earth metals

Question 31

Groups 3 has no name but

Answer 31

rather soft, silvery-white metals, although their hardness increases with atomic number.

Question 32

Group 4 are

Answer 32

metalloids

Question 33

Group 3 5 and 6 have no name

Question 34

Group 6 elements are called...

Answer 34

chalcogens

Question 35

All .... and other 3 elements , namely .......,........ and ...... are diatoms

Answer 35

Halogens Hydrogen Oxygen Nitrogen

Question 36

The groups/columns, tell us the number of electrons in the outer most shell also called ... Electrons,last shell Elements of the same group have equal valency

Answer 36

Valency

Question 37

........... , tell us the number of shells of an element | Have some number of shells but different groups

Answer 37

Period/rows

Question 38

What is electronic configuration?

Answer 38

It is the arrangement of electron in shells of an element | 2.8.8

Question 39

What are isotopes ?

Answer 39

These are atoms with the same number of protons and electrons but different number of neutrons.

Question 40

There are three types of carbon isotopes ,namely....

Answer 40

Carbon 12...6 neurons Carbon 13...7 neutrons Carbon 14....8 neutrons

Question 41

What is the significance of the electronic configuration of atoms ?

Answer 41

The electronic configuration of an atom is very important because the number of electrons in the other most shell (valency), determines the chemical property of an element including how it joins/bonds with other elements

Question 42

Group 8 gases are non reactive or .... Their shells are thought of as being full Shells,in the outer most shell Expect for helium

Answer 42

Inert

Question 43

Ionic bonding is ...

Answer 43

It occurs between non metals and metals

Question 44

Covalent bonding involves ....

Answer 44

the sharing of electron in non metals Nh3 CH4 HF

Question 45

Metallic bonding occurs in ...

Answer 45

Metals only aluminium...magnetism... sodium....