Test - Atomic Structure Flashcards
1
Q
- What is one characteristic that does not have to do with the nucleus?
A
Contains nearly all of the atom’s volume. NB 5
2
Q
- The majority of the mass of the atom is located in the and the majority of the volume of the atom is located in the .
A
Nucleus; Electron Cloud. NB 5
3
Q
- Boron, carbon, nitrogen, and oxygen are all members of the same .
A
Period. NB 16
4
Q
- Which element is the least reactive?
A
Argon NB 16
5
Q
- How is an atom electrically neutral?
A
The number of protons and electrons are equal. NB 17
6
Q
- Each family in the periodic table has its own characteristic properties based on the number of what?
A
Valence electrons. NB 20
7
Q
- What are substances that cannot be broken down chemically into other substances called?
A
Elements. NB 16
8
Q
- Which of the following elements would be the most reactive? Silicon, silver, argon, iodine
A
Iodine NB 16
9
Q
- Which of the following would be the best conductor of electricity? Iodine, silicon, argon, silver
A
Silver. NB 16
10
Q
- An unstable nucleus results from too many or too few what?
A
Neutrons. NB 15
11
Q
Categorize the following metals: Na, Al, Te, F, Ar, H
A
Metals - Na, Al Nonmetals - F, Ar, H Metalloids - Te
NB 16
12
Q
47d) This element is in the family with the most reactive nonmetals and has 4 energy shells.
A
Bromine. NB 16
13
Q
- List 3 elements from the group containing the most reactive nonmetals.
A
F, CL, Br. NB 16
14
Q
- In each period, how does the number of electrons in each kind of atom change from left to right between groups 1 and 2? Explain how you know.
A
Number of electrons increases by 1 in a period as moves across the period(Atomic # also increases). NB 27
15
Q
- An isotope of Carbon has 7 neutrons
a) Write this isotope’s notation in Nuclear Form
b) Write this isotope’s notation in Hyphen Form
c) Is this the most common form of the isotope? Explain how you know
if it is or isn’t
A
13^C, Carbon - 13, no because average atomic mass on the periodic table is 12.011 and is weight average. NB 16
