C1 Flashcards
1
Q
What is an Atom?
A
An atom is the smallest part of an element which can exist.
2
Q
What is an Element?
A
A substance made of only one type of atom and can’t be broken down chemically.
3
Q
What are Molecules?
A
Small groups of atoms covalently bonded.
4
Q
What is the Periodic table?
A
The periodic table is an arrangement of the elements in order of increasing atomic amount.
5
Q
What is a valence shell?
A
The outer electron shell.
6
Q
What are polyatomic elements?
A
Multiple atoms chemically bonded.
7
Q
What is an ionic chemical bonds?
A
The electrostatic attraction between oppositely charged ions.
8
Q
Hydrochloric acid
A
HCl
9
Q
Nitric acid
A
HNO3
10
Q
Sulphuric acid
A
H2SO4
11
Q
Phosphoric acid
A
H3PO4
12
Q
Ethanic acid
A
CH3COOH
