Foundation Flashcards
1
Q
What is the first element and its atomic mass?
A
Hydrogen, 1.008
2
Q
What is an isotope?
A
The same element with different numbers of neutrons
3
Q
What is Avogadro’s number?
A
6.02x10²³
4
Q
What colour is neutral in a universal indicator?
A
Green
5
Q
What is a covalent bond?
A
Elements combine electrons to satisfy octet rule
6
Q
Ionic compound
A
The valencies of the ions are swapped, swap and drop
7
Q
Metal + acid →
A
Salt + hydrogen gas
8
Q
Methane gas chemical equation
A
CH₄
9
Q
How many periods in the periodic table?
A
7
10
Q
What is group 1 of the periodic table known as?
A
Alkali metals
11
Q
What is group 18 of the periodic table called?
A
Noble/Inert gases
12
Q
What is group 17 of the periodic table known as?
A
Halogens
13
Q
What is a key characteristic of halogens?
A
Poisonous
14
Q
Ammonia formula
A
NH₃
15
Q
Ammonium formula
A
NH₄
