definitions

Question 1

What is an atom?

Answer 1

The atom is the smallest particle of an element that still retains the properties of that element

Question 2

Daltons atomic theory

Answer 2

All matter is made up of very small particles called atoms
All atoms are indivisible
They cannot be broken down into simpler particles

Question 3

Cathode rays

Answer 3

Streams of negatively charged particles called electrons they travel in straight lines from the cathode to anode are deflected by electric and magnetic fields and have sufficient energy to move a small object such as a paddle wheel

Question 4

Element

Answer 4

Substance which cannot be divided into simpler substances by chemical means

Question 5

Atom

Answer 5

Is the smallest part of an element which can take part in a chemical reaction are atoms are indivisible they can I’ll be broken down into simpler particles