T1 Atoms and the Periodic table

Question 1

What is the proton number/atomic number?

Answer 1

The number of protons in the nucleus of the atom

Question 2

What is the mass/nucleon number?

Answer 2

The total number of protons and neutrons in the nucleus of the atom

Question 3

What do columns/groups in a periodic table show?

Answer 3

same number of outer shell electrons

Question 4

What do periods/rows in a periodic table show?

Answer 4

number of outer shells

Question 5

Define isotope

Answer 5

Atoms which contain the same number of protons but different numbers of neutrons

Question 6

Why do isotopes have the same properties?

Answer 6

same properties because same number of electrons in outer shell

Question 7

Why is group 0 unreactive?

Answer 7

1. noble gases
2. full outer shell of electrons so stable

Question 8

Define compound

Answer 8

A substance made up of more than one type of atom chemically bonded together

Question 9

Define atom

Answer 9

The smallest part of an element which still behaves as that element

Question 10

Define mixture

Answer 10

Different types of particles in the same physical space but not chemically joined

Question 11

What is the charge, mass and position of a proton?

Answer 11

Proton
Relative Charge : +1
Relative Mass : 1
Position in atom : Nucleus

Question 12

What is the charge, mass and position of an electron?

Answer 12

Electron
Relative Charge : -1
Relative Mass : 1/1836
Position in atom : Orbiting in shells

Question 13

What is the charge, mass and position of an neutron?

Answer 13

Neutron
Relative Charge : 0
Relative Mass : 1
Position in atom : Nucleus

Question 14

Metal oxides dissolve in water to form _____________ solutions. They would turn universal indicator _________

Answer 14

alkaline
blue/purple

Question 15

Non- metal oxides dissolve in water to form _______________ solutions. They would turn universal indicator ___________

Answer 15

acidic
red/orange