Y8 Science Prep Flashcards
1
Q
What is the lightest element?
A
Helium
2
Q
What is Nylon?
A
Nylon is a material made by 2 different compounds
3
Q
What group are the noble gases in?
A
Group 0
4
Q
How reactive are the noble gases?
A
They all have a low reactivity?
5
Q
In group 7 does the colour get darker as you go down, or does it go lighter as you go down?
A
Darker
6
Q
What 2 elements are in iron sulphide?
A
Iron and Sulphur
7
Q
What 2 elements in hydrogen bromide?
A
Hydrogen and bromine
8
Q
What is neon used for?
A
Barcode readers
9
Q
What is the tooth enamel made of?
A
Phosphorus, calcium and oxygen
10
Q
As you move down group the melting point…
A
Decreases
