The Atoms family
(Atomic structure)
(Atomic structure)
P-table
(Periodic table)
(Periodic table)
You could be a model
(Atomic models)
(Atomic models)
Letters and Math???
(chemical formulas)
(chemical formulas)
"Git off meh properties"
(Chemical/Physical properties)
(Chemical/Physical properties)
100
Name the 3 subatomic particles, and what kind of charge each one has.
Proton- Positive
Neutron- Neutral
Electron- Negative
100
The periodic table is arranged in order according to the number of _______ found in the atom of each element.
Protons
100
What is the middle of the model called?
The nucleus
100
In the molecule "C6H12O6" how many elements are there? What are they?
3. Carbon, Hydrogen, and Oxygen.
100
What are the 3 categories of elements on the periodic table called?
Metals, Nonmetals, and Metalloids
200
2 or more atoms of different types of elements bonded together are called what?
Compound
200
As a general rule, where on the periodic table are the metalloids found? What is the exception to the rule?
Touching the bold/black staircase.
Exception: Aluminum
200
What element is depicted below?
Nitrogen
200
Which formulas are the reactants in the chemical equation below?
6CO2 + 6H2O → C6H12O6 + 6O2
6CO2 and 6H2O
200
List 3 properties of nonmetals:
Poor conductors of heat/electricity
Brittle
Dull
Low boiling point
300
How many neutrons does an atom of Chlorine (Cl) Have?
18
300
What is the name & atomic mass of the element found in group 4, period 5 of the periodic table?
Zirconium, 91amu.
300
Describe the conductivity of the element modeled below:
It's a semi-conductor.
300
How many total molecules are in the following chemical formula?: 3CO2 + 6H2O + O2
10
300
Combustion (burning) is an example of (Physical/chemical) change? Explain how:
Chemical change, because once it has been burnt, it can never go back to the way it was before. Also gas production and temperature change.
400
Which part of the atom decides how reactive an element is?
The Valence electron
400
What is the group/period of the metalloid element that has an atomic mass >125, but has an atomic number <75?
Group 16 (6A)
Period 5
400
Depicted below is an incomplete model of a certain element. Name the element, and explain how you got your answer.
Phosphorus, it has 3 orbitals, with 5 valence electrons, so it must be in period 3 group 5A
400
How many atoms of each element are found in the formula 4Al(O2H)3?
Al=4
O=24
H=12
400
What is the density of a 5g box that takes up 20ml of space?
.25g/ml
500
Explain why Helium's (He) atomic structure allows it to be in group 18 (8A):
Even though it doesn't have 8 valence electrons, it is in group 18 because it has 2 valence electrons in it's only shell, which makes it full according to the law of 2-8-8
500
Which group on the periodic table is the most reactive? Which is the 2nd most reactive? Explain why:
Group 1 is the most reactive, and group 17 (7A) is the 2nd most reactive. This is because every element wants to have a full outer shell (usually 8 valence electrons).
500
Which of the following elements depicted below is the most reactive? (name it)
Potassium
500
Is the following chemical equation balanced? Why/Why not?
2HCl + NaOH 🡪 NaCl + H2O
No, there are more Hydrogens and Chlorines on the reactant side.
500
List the 5 evidences of chemical change:
Color change (unexpected)
Gas production
Light production
Temperature change
Precipitate formed