Chem Test Thinggggy Flashcards
1
Q
Top 4 elements in human body
A
Oxygen carbon nitrogen hydrogen
2
Q
Extremely small particle of matter that retains its identity in chemical reactions
A
Atom
3
Q
A type of matter composed of only 1 kind of atoms
A
Element
4
Q
__________ changes the way atoms are grouped together
A
Chemical reaction
5
Q
How many elements are their?
How many in nature
A
115
88 in nature
6
Q
T or f
Atoms are not indivisible
A
True
7
Q
What did Robert Millikan do
A
Oil drop experiment
8
Q
Gold foil experiment
A
Rutherford
9
Q
Who found out that the atom is mostly space
A
Rutherford
10
Q
Atoms with the same number of protons but different number of neutrons
A
Isotopes
11
Q
Top 4 elements on planet earth
A
Oxygen, silicon, aluminum, iron
