Unit 1 Periodic Table And Atomic Strucutre

Question 1

How are elements arranged?

Answer 1

Element arranged in order of increasing atomic number

Question 2

Why are elements grouped together?

Answer 2

Elements be have similar chemical properties are grouped together

Question 3

What is a group?

Answer 3

A vertical column of elements

Question 4

What is a period?

Answer 4

Horizontal group of elements

Question 5

What physical properties do metals have? (7)

Answer 5

• conduct heat
• conduct electricity
• sonorous- makes a sound when hit
• ductile- can be drawn to make a wire
• malleable- can be hammered to form sheets
• strong
• solid at room temperature

Question 6

What is group one in the periodic table?

Answer 6

Alkali metals

Question 7

What are alkali metals?

Answer 7

Very reactive soft metals- must be stored under oil to stop reactions of air and water. Reactivity increases down the group.

Question 8

What is group 7 in the periodic table?

Answer 8

Halogens

Question 9

What are the halogens

Answer 9

Most reactive non-metal elements. Made up of solids, liquids and gases.

Question 10

What is group 0 of the periodic table?

Answer 10

Noble gases

Question 11

What are noble gases

Answer 11

Very unreactive, colourless gases.

Question 12

What is the atom made up from

Answer 12

The atom is made up of a centre called the nucleus contains protons and neutrons and electrons which are found in a space around the nucleus and electron shells

Question 13

What always has the same number of protons

Answer 13

Electrons

Question 14

What is the location of a proton?

Answer 14

Nucleus

Question 15

What is the location of an electron?

Answer 15

Outside the nucleus in shells

Question 16

What is the location of a neutron?

Answer 16

Nucleus

Question 17

What is the charge of a proton?

Answer 17

+1

Question 18

What is the charge of an electron?

Answer 18

-1

Question 19

What is the charge of a neutron?

Answer 19

0

Question 20

What is the mass of a proton?

Answer 20

1

Question 21

What is the mass of an election?

Answer 21

Almost 0

Question 22

What is the mass of a neutron?

Answer 22

1

Question 23

What is the same as an atomic number?

Answer 23

The number of protons

Question 24

What are the numbers of the elements called?

Answer 24

The atomic number

Question 25

How are elements arranged in the periodic table?

Answer 25

Elements are arranged on periodic table in order of increasing atomic number

Question 26

How do you find the mass number of an element?

Answer 26

Number of protons + number of neutrons

Question 27

How do we find the number of neutrons?

Answer 27

Mass number - atomic number

Question 28

What is the number on top of a nuclide notation?

Answer 28

Mass number

Question 29

What the number at the booth now a nuclide notation?

Answer 29

The atomic number

Question 30

What is an isotope

Answer 30

Atoms with the same atomic number but different mass number

Question 31

What is the relative atomic mass of an element

Answer 31

The relative atomic mass of an element is the average mass taking into account the number of isotope and proportions of each present

Question 32

How can the relative atomic mass number be calculated

Answer 32

(% isotope 1 x mass isotope 1) + (% isotope 2 x mass isotope 2) ————————————————————————————— 100

Question 33

How can you use electron arrangements to explain why element in the same group have similar chemical properties

Answer 33

The atoms of elements in the same group all have the same number of electron in their outer shell

Question 34

What is an electron arrangements

Answer 34

An electron arrangement is the order in which the number of electrons fit into the various energy levels

Question 35

What is unusual about the electron arrangements of atoms in the same group

Answer 35

They have the same number of outer electrons