Test- Atomic Structure Flashcards
1
Q
- The measurement of how much matter an object contains is its
A
Mass pg. 4
2
Q
- What is the greatest number of valence electrons an atom can have?
A
8 pg. 11
3
Q
- The total number of electrons in the outer shell of a sodium atom is
A
1 pg. 9
4
Q
- Which particles determine the atomic number of an element?
A
protons only pg. 7
5
Q
- Which word below is represented by the word “period” on the Periodic Table?
A
energy level pg. 16
6
Q
- An atom is electrically neutral because
A
the numbers of protons and electrons are equal pg. 7
7
Q
- When looking at the halogens on the periodic table, how does the number of valence electrons change as the energy level is increased?
A
the total number of valence electrons does not change. It remains at 7. pg. 16
8
Q
- Which of the following elements would be the best conductor of electricity?
A
silver pg.16
9
Q
- Which of the following elements would be the most reactive?
A
iodine pg. 16
10
Q
- Which of the following elements would be the least reactive
A
silicon pg. 16
11
Q
- With the exception of helium, group 18 elements usually have ———- valence electrons, so they do not usually react with other elements
A
eight pg. 16
13
Q
- Group name for 1
A
Alkali metals pg. 16
14
Q
- Group name for 18
A
Noble gasses pg. 16
15
Q
- Group name 17
A
Halogens pg. 16
16
Q
- Arranged the elements on the periodic table based on atomic number
A
Henry Mosely pg. 3
17
Q
- Solid Sphere Model; elements are atoms with different masses
A
Dalton pg. 3
18
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 pg. 3
19
Q
- Nuclear Model; Gold foil experiment allowed him to discover that the nucleus was the positively charged center of the atom surrounded by negatively charged electrons.
A
Ernest Rutherford pg. 3
20
Q
- An isotope of Carbon has 7 neutrons.
c. Is this the most common form of the isotope? Explain how you know if it is or is it.
A
It is because it’s protons and neutrons are equaly balanced. pg. 16
21
Q
- Use the following clues and the periodic table to determine the identity of each element described below.
b. This element has six energy levels and eight valence electrons. it must be?
A
Radon pg. 16
22
Q
- Classify the following elements as metals, nonmetals, or metalloids. Include one characteristic of each type. Use the chart on the answer sheet.
A
Property of nonmetals- poor conductors
pg. 14
23
Q
- Classify the following elements as metals, nonmetals, or metalloids. Include one characteristic of each type. Use the chart on the answer sheet.
A
Property of metalloids- semi- conductors
pg. 15
24
Q
- Arranged the elements on the periodic table based on atomic mass.
A
Dmitri Mendeleev pg. 3
