Term 1 Atoms and elements Flashcards
1
Q
what is everything in the universe made of?
A
chemicals
2
Q
what are chemicals made of?
A
atoms and elements
3
Q
what is the periodic table?
A
table of the elements known to people
4
Q
What is a atom made of
A
nucleus (centre neutral charge), protons (centre postive charge) and electrons (electron shells, negative charge)
5
Q
what are elements made of?
A
one type of atom
6
Q
what are compounds?
A
made of more than one type of atom
7
Q
mass number
A
neutrons + protons
8
Q
Atomic number
A
number of protons (at bottom of element on periodic table)
