Year 10 F. Homework 12th Jan - Kirsty Blake | Biblioteka

1

State the seven types of electromagnetic radiation in order from longest wavelength to shortest wavelength.

Radio waves

Microwaves

Infrared

Visible light

Ultraviolet X-rays

Gamma rays

Microwaves

Radio waves

Infrared

Visible light

Ultraviolet X-rays

Gamma rays

Radio waves

Microwaves

Infrared

Visible light

Ultraviolet

Gamma rays

1

What is an ion?

A range of waves of different frequencies.

An atom that has gained or lost an electron to become charged

An electron moves further from the nucleus to a higher energy level

1

The atomic number tells us………

.…….the number of neutrons

.…..the total number of protons and neutrons

.…… the number of protons which will be the same as the number of electrons

1

A negative ion is formed when…

the atom gains electrons

the atom loses electrons

the total number of electrons inside the atom stays the same

1

What can make a nucleus unstable?

-Too many nucleons (neutrons and protons)

Many more protons than neutrons

-Many more neutrons than protons

1

What does an unstable nucleus do in order to become more stable?

Gives out radiation

Takes in electrons

Nothing

1

What is radioactive decay?

The process by which an atom becomes a compound

The process by which an atom takes in radiation to become more stabe

The random process by which a nucleus gives out radiation to becomes more stable

1

An alpha particle is made up of…….

two protons and two electrons

two protons and two neutrons

two electrons and two neutrons

1

What are the three types of radiation that can be emitted from an unstable nucleus?

Alpha, Beta , delta

Alpha, beta, gamma

Alpha, gamma, xray

1

What is a beta particle β?

A high speed electron that is ejected from the nucleus

A high speed neutron that is ejected from the nucleus

A high speed proton that is ejected from the nucleus