Test- Atomic Structure Flashcards
1
Q
- Which column are Rare earth metals in?
A
They are in column 3.
Nb.13
2
Q
14. Which of the following elements would be the least reactive? Silicon Silver Argon Iodine
A
Argon
Nb.16
3
Q
- Can an element be broken down chemically into other substances?
A
Elements
Nb.16
4
Q
- The measurement of how much matter an object contains is its
A
Mass
Nb.9
5
Q
23. Which of the following elements are most reactive. Silicon Silver Argon Iodine
A
Iodine
Nb.16
6
Q
24. Which of the following elements would be the best conductor of electricity. Iodine Silicon Argon Silver
A
Silver
Nb.16
7
Q
- The atomic number of magnesium is 12. Therefore its nucleus must contain
A
12 protons and no electrons
Nb.9
8
Q
- Electrons travel in fixed orbits around the nucleus of the atom.
A
Neils Bohr
Nb.16
9
Q
- Solid Sphere Model; elements are atoms with different masses
A
Dalton
Nb.1
10
Q
- Electron cloud model; surrounding the nucleus is an electron cloud made of shells- electrons do not, however, travel in a fixed orbit.
A
Shrodinger and Heisenberg
Nb.2
11
Q
47a. This element is in the same family as br, but as fewer protons than mg. It must be
A
F, rn, br
Nb.16
12
Q
- In each period, how does the number of electrons change from left to right between group 1 and 2?
A
Number of electrons increases by 1 in a period as it moves along the period
Nb.14
13
Q
52c. Is this the most common form of isotopes?
A
12C is the most common form
No. 16
14
Q
- Describe one similarity and one difference between the twin atoms you drew above. Include why each difference and similarity is expected, based on each elements location on the periodic table.
A
Same = # valence e- = group difference = # of energy levels
Nb. 7
