chemistry_atoms

Question 0

What is atom made of?

Answer 0

Protons, neutrons, and electrons

Question 1

How many types of atoms?

Answer 1

120

Question 2

Where are neutrons and protons found?

Answer 2

In nucleus

Question 3

What does the mass number represent?

Answer 3

Numbers of protons and neutrons present in an atom

Top number

Question 4

What does the atomic number represent?

Answer 4

Number of protons present in atom

Bottom number

Question 5

Connection between no. Of protons and no. Of electrons

Answer 5

Same if neutral

Question 6

What is an atom with charge called?

Answer 6

An ion

Question 7

What can you not change in an atom?

Answer 7

Protons and neutrons

Question 8

Where does the electrons orbit?

Answer 8

Shells

Question 9

How many electrons can the first she’ll hold?

Answer 9

2

Question 10

How many electrons can the second shell hold?

Answer 10

8

Question 11

How many electrons can the third shell hold?

Answer 11

8

Question 12

How many electrons can the fourth shell hold?

Answer 12

2

Question 13

What are the rows in the periodic table called?

Answer 13

Periods

Question 14

What are the columns called in periodic table?

Answer 14

Groups

Question 15

Is hydrogen metal or non metal?

Answer 15

Non metal

Question 16

How does the periodic table divide the metals and non metals?

Answer 16

B C N O Fe Ne
____
Al | Si P S Cl Ar
|____
|_____
|______
|

Question 17

Periodic table is arranged in the order of what?

Answer 17

Number of electrons

Question 18

The period number corresponds to what?

Answer 18

Number of shells

Question 19

What does the group corresponds to?

Answer 19

Number of electrons in outer shell

Question 20

What are the elements of group 8 known as?

Answer 20

Noble gas

Question 21

What makes an atom un-reactive?and what’s that called?

Answer 21

Having a full outer shell

Inert

Question 22

What does all elements want?

Answer 22

A full outer shell

Question 23

Where is the transition metals?

Answer 23

The middle bit

Question 24

Charge on ions in periodic table

Answer 24

Metals are positive | And nonmetal is negative

Question 25

Why all the ions have the charges that they do?

Answer 25

Atoms gain or lose electrons to gain full outer shell

Question 26

Group one metals are known as...

Answer 26

Alkali metals

Question 27

Observations | When group one metals were added in water

Answer 27

``` The float and reduce in size Gas produced( hydrogen) Ball shaped Potassium downwards have enough energy to make flame Water becomes alkali More reactive as you go down ```

Question 28

Lithium + water —> | Li + H2O —>

Answer 28

Lithium + water —> lithium hydroxide + hydrogen Li + H2O —> LiOH + H2 2Li + 2G2O —> 2LiOH + H2

Question 29

What conduct electricity and what does not?

Answer 29

Metals conducts and non metals don't

Question 30

What are basic

Answer 30

Metal oxide

Question 31

What is acidic

Answer 31

No metals are acidic

Question 32

In the reaction between magnesium and steam What gas is produced? What colour does magnesium burn?

Answer 32

Hydrogen | Bright white light

Question 33

Steam + magnesium —> | H2O + Mg—>

Answer 33

Steam + magnesium —> hydrogen + Magnesium oxide | H2O + Mg —> H2 + MgO

Question 34

Are group 2 metals more or less reactive than group 1?

Answer 34

Less

Question 35

Group 1&2 are more ____ as you go down the group | Why?

Answer 35

Reactive | Because as you go down, the outer electrons are further away from the nucleus and so easier to lose.

Question 36

Flame testing | What colour does lithium ions burn?

Answer 36

Red

Question 37

What colour dies calcium ion burn?

Answer 37

Brick red

Question 38

What colour does sodium ion burn?

Answer 38

Yellow

Question 39

What colour does barium burn?

Answer 39

Apple green

Question 40

What colour does potassium ion burn?

Answer 40

Lilac

Question 41

What colour does copper ions burn?

Answer 41

Green

Question 42

A positive ion is called a ______

Answer 42

Cation

Question 43

When an atom lose electrons its called______

Answer 43

Oxidation

Question 44

A negative ion is called _____

Answer 44

Anion

Question 45

When atom gain electrons we call it_____

Answer 45

Reduction

Question 46

OIL RIG

Answer 46

Oxidation is loss Reduction is gain

Question 47

Metal and metal bonding

Answer 47

Metallic bonding

Question 48

Nonmetal and metal bonding

Answer 48

ionic bonding

Question 49

Non metal and non metal bonding

Answer 49

Covalent bonding

Question 50

What bonding is sodium chloride

Answer 50

ionic bonding

Question 51

Definition of an ionic bond

Answer 51

An ionic bond is the strong electrostatic force of attraction between oppositely charged ions.

Question 52

Metal always ______ electrons | Non metals always ____electrons

Answer 52

Lose | Gain

Question 53

All ionic compounds have the charge of___

Answer 53

0

Question 54

What is the characteristics of an ionic compound? And why

Answer 54

It has high boiling and melting point Because forces of attraction is high between opposite charges It require a lot of energy to break

Question 55

What is the first group aka?

Answer 55

Alkali metal

Question 56

What is the 2nd group aka?

Answer 56

Alkali earth metas

Question 57

What is the relationship between the electronic configuration and the position of an element in the periodic table?

Answer 57

Number of electrons in outer shell is the group and number of shell is the period

Question 58

Describe how to carry out a flame test?

Answer 58

Unwire in-chrome wire, use tong to dip it in hydrochloric acid, and dip the end of the wire into metal compound and put it over a blue roaring flame and observe the colour in the first few seconds

Question 59

Why does the element in the same group has similar properties?

Answer 59

Because they have the same number of electrons on the outer shell