Chemistry

Question 1

What is the position in the periodic table determined by?

Answer 1

Group and period.

Question 2

What does the atomic number equal?

Answer 2

The number of protons

Question 3

What is electron configuration?

Answer 3

It shows how the electrons are arranged in the shells of an atom when it is in its ground state.
eg. sodium atom has 11 electrons its electron configuration is 2,8,1

Question 4

Whats the difference between a cations and a anion?

Answer 4

Anions have a negative charge whilst cations have a positive charge.

Question 5

What are the Alkali metals?

Answer 5

They are very reactive such as sodium, lithium and potassium.Group number 1 charge is +1

Question 6

What are Alkaline earth metals?

Answer 6

They are reactive and react with water to form hydroxides. Such as magnesium, calcium and beryllium.Group number 2 charge is +2

Question 7

What are halogens?

Answer 7

They are non reactive non- metallic elements such as fluorine, chlorine and bromine. It is group 17 and the charge is -1

Question 8

What are noble gases?

Answer 8

These are all gases. Such as helium, neon and argon. It is group 18 and the charge is 0

Question 9

What is iconic bonding?

Answer 9

It occurs when metallic elements bond with non- metallic elements.

Question 10

What is covalent bonding?

Answer 10

It happens when non- metallic atoms bond with each other.

Question 11

What is metallic bonding?

Answer 11

This is when opposite charges attract and this force provides bonding between the positive ions and loose electrons surrounding them.

Question 12

What is the midpoint of the periodic table?

Answer 12

Group 4

Question 13

What is the charge of lithium and hydrogen?

Answer 13

Li+, H+

Question 14

Which side become negative charges?

Answer 14

The right

Question 15

What is the atomic number?

Answer 15

The number above the symbol (Al) the number is 13

Question 16

What does mass number not include?

Answer 16

Electrons

Question 17

What happens with isotopes?

Answer 17

The top number changes ( mass number ). Atomic number stays the same.

Question 18

Equations- what do Mg2+ and 02 equal?

Answer 18

Mg0 ( numbers cancel out )

Question 19

What is aluminium oxide?

Answer 19

Al (small 2) 0(small 3)

Question 20

What is the relative atomic mass?

Answer 20

The mass of all protons and neutrons in the atom.

Question 21

What are protons?

Answer 21

Positively charged

Question 22

What is the nucleus?

Answer 22

Made up of protons and neutrons.

Question 23

What are electron shells?

Answer 23

They spin around the nucleus

Question 24

What are neutrons?

Answer 24

neutrally charged

Question 25

What are electrons?

Answer 25

Negatively charged, attracted to positive nucleus

Question 26

What are two forms of carbon?

Answer 26

dk bro

Question 27

Why is hydrogen in group one when it is not a metal?

Answer 27

Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals.

Question 28

What is the type of bonding with electrons?

Answer 28

An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Question 29

What is the difference between groups and periods?

Answer 29

Periods are horizontal, groups are vertical.