Chapter 3 Atoms

Question 1

What’s an atom

Answer 1

Smallest particle of an element which takes part in a chemical reaction

Question 2

What’s the other name for atomic number

Answer 2

Proton number

Question 3

What’s an isotope

Answer 3

Atoms of an element with same atomic number but different mass number

Question 4

Name some common radicals

Answer 4

Ammonia  1 
Ammonium 1
Hydroxide 1
Nitrate 1
Sulphate 2
Sulfite 2 
Sulphide 2
Carbonate 2
Oxygen 2
Phosphate 3

Question 5

What’s electronic configuration

Answer 5

The representation of arrangements of electron in an orbit

Question 6

What are group 7 element called

Answer 6

Halogen

Question 7

What’s the color of fluorine

Answer 7

A colourless gas

Question 8

What’s the other name of inert gases

Answer 8

Noble gases

Question 9

Iron II oxide + aluminum > aluminum oxide + iron

What happened to aluminum

Answer 9

It was oxidized

Question 10

Zn + pb(no3)2- pb + zn(no3)4

What’s the reaction called

Answer 10

Redox reaction

Question 11

Name example of decomposition reaction

Answer 11

Cuso4 + H2 - cu + H2so4

Question 12

What’s an electrovalent bond

Answer 12

Bond between a metal and non metals

Question 13

Allotropy is caused by the

Answer 13

Possibility of more than one arrangement of atoms

Question 14

Name an example of an allotrope

Answer 14

Carbon allotrope like

Diamond
Graphite

Sulphur

X-sulphur
B-sulphur

Question 15

What’s the other name for electrovalent bonding

Answer 15

Ionic bonding

Question 16

What’s a displacement reaction

Answer 16

More reactive metal takes place of less reactive metal of its group

Question 17

What’s a catalyst

Answer 17

Substance that alters rate of the reaction

Question 18

Steam reacts with carbon

Which one is a oxidizing argent

Answer 18

Steam

Question 19

Name some properties of transition metals

Answer 19

Higher density

Higher melting and boiling point

They used as catalyst

Question 20

What’s the color of chlorine

Answer 20

Is a green gas

Question 21

What are group 0 elements called

Answer 21

Inert gases

Question 22

What are periods

Answer 22

Are horizontal raw

Question 23

What’s an element

Answer 23

Substance that cannot be split into two eg Mg

Question 24

Name some examples of an isotope

Answer 24

Hydrogen

Carbon

Question 25

What letter denotes atomic number

Answer 25

Z

Question 26

What's an atom made of

Answer 26

Nucleus - protons and neutrons Electrons

Question 27

What's the charge of protons

Answer 27

Positive charge

Question 28

Proton are same with

Answer 28

Electrons

Question 29

What's an ion

Answer 29

It's a charged particle

Question 30

What's a compound

Answer 30

Substance made of two or more substances chemically combine | Cap

Question 31

What are group

Answer 31

Vertical column of elements

Question 32

Transition metals are in group

Answer 32

Between 2 : 3

Question 33

What's the color of bromine

Answer 33

Brown liquid

Question 34

What reaction occurs between sodium hydroxide and sulphuric acid

Answer 34

Naturalization

Question 35

What an oxidizing agent

Answer 35

Which causes oxidation

Question 36

What's decomposition

Answer 36

When a single compound broken into two product

Question 37

Name displacement reaction

Answer 37

Zn + cuso - znso + cu

Question 38

What are properties of ironic bonding

Answer 38

They soluble in water They are brittle They not volatile They have high melting and boiling point They do not conduct electricity

Question 39

What is metabolic bonding

Answer 39

Bonding between metals

Question 40

What are properties of metals

Answer 40

They have high densities They high melting and boiling point They ductile can drawn into wire They are lustrous They shinny They sonorous produce sound

Question 41

What is covalent bonding

Answer 41

Bonding between non metals

Question 42

What is endothermic

Answer 42

Involves the absorbing of heat from it surrounding which has a positive enthalpy

Question 43

What's double decomposition

Answer 43

Two compound take part both decomposition and two new substance are formed

Question 44

2 Fe + 3cl2 - 2 kecL3 What's the reaction called

Answer 44

Synthesis reaction

Question 45

When copper II oxide and ammonia to produce coper and nitrogen was it oxidized or reduced

Answer 45

Oxidation

Question 46

What's the color of ammonia

Answer 46

Black solid which sublime

Question 47

Name properties of alkaline earth and alkali metals

Answer 47

Reactivity increase going down the group Have low densities Low melting point and boiling points most reactive Element which less reactive displace more reactive metals

Question 48

What are molecules

Answer 48

Formed by two more atoms

Question 49

What's a valency

Answer 49

Combining power of an element

Question 50

What's atomic mass number

Answer 50

The sum of proton number and neutron number

Question 51

What's the charge of neutron

Answer 51

They are neutral

Question 52

What's the charge of electrons

Answer 52

Negative

Question 53

What are radicals

Answer 53

They substance which usually exist as molecules not atoms

Question 54

What is a mixture

Answer 54

Substance made of two or more substances physically combine

Question 55

What do we call group one element

Answer 55

Alkali metals

Question 56

Which group are earth found

Answer 56

Group II

Question 57

What are properties of halogens

Answer 57

They have even electrons in outmost shell They more reactive non metals They reactively increase going up the group They become denser and denser going down the group

Question 58

Name properties of inert gases

Answer 58

Un reactive because of eight outmost shell Have an octant

Question 59

Carbon dioxide + carbon - carbon monoxide Carbon dioxide was

Answer 59

Reduced

Question 60

Caco2 - cao + co2 | What reaction occurred

Answer 60

Decomposition reaction

Question 61

Name an example of decomposition reaction

Answer 61

Caco3 - cao + co2

Question 62

What exothermic reaction

Answer 62

The release heart to surrounding which has a negative enthalpy

Question 63

What are properties of covalent bonding

Answer 63

They are insoluble in water They have low melting and boiling point They do not conduct electricity in any state

Question 64

What are allotrope

Answer 64

They existence of two or more forms of an element in the physical state