atoms and elements Flashcards
1
Q
what is an atom?
A
tiny, tiny particle
2
Q
what does the Dalton’s atomic model say?
A
all matters are made up of atoms
3
Q
how many elements are their in 1 different atom?
A
1
4
Q
what is an element?
A
a substance which contains one type of atom
5
Q
will samples of an element always contain the same type of atom?
A
YES
6
Q
what can very different elements have?
A
different properties
7
Q
what is the periodic table?
A
all the elements we have discovered
8
Q
how are the elements with similar properties arranged in the periodic table?
A
vertical columns
9
Q
what are the vertical columns called in the periodic table?
A
groups
10
Q
what are the horizontal columns called in the periodic table?
A
periods
