Test - Atomic Structure Flashcards
1
Q
- A neutral atom may contain 8 protons…
A
9 neutrons and 8 electrons
NB 7 pg 7
2
Q
- An atom is electrically neutral because..
A
The numbers of protons and electrons are equal
Nb 7 pg 8
3
Q
- The measurement of how much matter an object contains is its
A
Mass
NB 7 pg 7
4
Q
- Which of the following elements wold be the most reactive?
Silicon, silver, argon and iodine
A
Iodine
NB 7 pg 13
5
Q
- An unstable nucleus results from too many or too few…..
A
Neutrons
NB 7 pg 7
6
Q
- The atomic number of magnesium is 12. Therefore its nucleus must contain
A
12 protons and no electrons
NB 7 pg 7
7
Q
- Which scientist did the Solid Sphere Model; elements are atoms with different masses
A
Dalton
NB. 7 pg 3
8
Q
- Which scientists arranged the elements on the periodic table based on atomic number?
A
Henry Mosely
NB 7 pg 3
9
Q
- What is carbons most common form? How do you know it is?
A
Carbon -12, bc it is the average atomic mass on the PT
NB 7 pg 8
