Final Study Guide Flashcards
Identify the following as a compound, element or mixture.
copper
element
Identify the following as a compound, element or mixture.
air
mixture
Identify the following as a compound, element or mixture.
salt water
mixture
Identify the following as a compound, element or mixture.
sample of NaCl
compound
Identify the following as a compound, element or mixture.
milk
mixture
If an element has 33 protons, 42 neutrons, and 36 electrons what is its atomic number?
33
If an element has 20 protons, 20 neutrons, and 20 electrons what is its mass number?
40
What element has 29 protons, 35 neutrons, and 27 electrons?
Copper
Determine the number of protons, electrons, and neutrons for an isotope which has atomic number 56 and a mass number of 138.
protons: 56
neutrons: 56
electrons: 82
Identify the following orbital designations that are possible. If there are any that are impossible,
EXPLAIN.
Orbitals: 2s, 4d, 1p, and 5f
1p is impossible. The p sublevel is not available until the 2 principle energy level.
How many of the following are true regarding the ion 133Cs+?
I. The number of neutrons is 78.
II. The ion contains more protons than electrons.
III. The mass number is 133
IV. The ion is an alkali metal.
All of the above are true
The small core at the center of an atom containing a positive charge is called the
nucleus
Atoms of each element contain a unique number of _______ in their nuclei
protons
Two isotopes of the same element may have different …
a. mass numbers and atomic numbers.
b. numbers of protons and numbers of neutrons.
c. mass numbers and numbers of neutrons.
d. chemical properties.
c. mass numbers and numbers of neutrons.
._____ is anything that has mass and volume.
Matter
