ATOMS
Periodic Table
IONS
ISOTOPE
BOHR MODEL
100
What is an atom?
The smallest unit of matter.
100
How many protons does the element in in group 6, period 4 have?
24
100
What is an ion?
A charged atom. An atoms that's gained or lost electrons.
100
What is an isotope?
Atoms with the same number of protons but different number of neutrons.
100
The period location also represents
The number of electron shells
200
Where can you find the atomic number? Is it the larger or smaller number.
Periodic table, it is the smaller of the two numbers.
200
What seperates the metals from nonmetals?
Metalloids (Stairstep)
200
What are the two types of ions? What are their charges?
Cation-positive and anion-negative.
200
There are two ways to notate an isotopes. Show both notations for carbon-13.
C-13 or 13C
200
How are Neon and Argon's Bohr model similar?
They both have 8 valence electrons
300
Given the following image, what element is this?
Helium
300
How many neutrons does the element with 52 protons have?
76 neutrons
300
P=3
N=4
E=2
Write element name and correct symbol.
Lithium. Li+1
300
Which of the following are isotopes of one another and why?
C, D and E are isotopes because all of them have the same number of protons (3). They are all isotopes of Lithium.
300
Draw the Bohr model for Magnesium.
400
What is the charge of an atom? What has to be true to make this happen?
Atoms have zero charge (neutral). Protons must equal electrons.
400
What subatomic particles are located in the nucleus?
Protons and neutrons
400
An element has 15 protons and 18 electron, is this an ion? If so, what type? Correct symbol?
Ion. Anion. P-3
400
Which of the following are isotopes and why?
B and C are isotopes. They are Lithium isotopes. They have the same protons but different neutrons.
Bonus: Which of the following are ions?
400
A chemistry student draws the Bohr model for Carbon. The class knows carbon has 6 electrons, when neutral. The student places 4 electrons on level 1 and 2 electrons on level two. Is their Bohr model draw correctly? Why or why not?
The student drew the Bohr model incorrectly. Level 1 can only hold 2 electrons.
500
What is the difference between the atomic mass and mass number? Where are they located?
Atomic mass is the average mass of the isotopes found on the periodic table. This is the mass of an atom. Mass number is the mass of the specific isotope. It is not found on the table but given.
Ex: X-m format
500
What is special about Mercury and Bromine?
They are metals but liquid at room tempurtature
500
e= 28 p=29
p=29 e=27
Given the information above, are these the same element? If so, what element? What are their correction symbols/notation?
Yes; they are both copper. Cu2+ and Cu+1.
500
Calculate the average atomic mass of boron (B), which has two isotopes: B-10 with 19.9% natural abundance, and B-11 with 80.1% abundance.
Average atomic mass of boron = (0.199 X 10 amu) + (0.801 X 11 amu) = 10.80 amu
500
Bohr model was contructed in what year?
1913