Periodic Table of Elements
Counting Atoms
Phase Change
Chem/Phys Properties
Everything Else
Vocab
100
What family do Bromine (Br) and Chlorine (Cl) belong to?
Halogens
100
How many electrons would this molecule have?
11 + 17 = 28
100
What is it called when water molecules gain energy and turn from a liquid to a gas?
Evaporation
100
What is the difference between an independent variable and a dependent variable?
Independent = You change in an experiment
Dependent = What you measure in an experiment
100
What is the best graph to use when dealing with percentages (100%)?
Circle Graph
100
What vocab word does this definition belong to:
Process by which one or more substances are altered to form new substances.
Chemical Change
200
How many valence electrons does Bismuth (Bi) have?
Group 15 = 5 valence electrons
200
What would the chemical formula be for the following molecule?
H2SO4
200
What happens to molecules when a substances is heated?
When it is cooled?
Heated = Gains Energy and Speeds Up
Cooled = Loses Energy and Slows Down
200
Which type of bond shares electrons between 2 non-metals?
Transferring electrons between a metal and a non-metal?
Covalent = Sharing / Non-Metals
Ionic = Transferring / Metal & Non-Metal
200
Carlos wanted to see if his turtle preferred lettuce to carrots. He used the same turtle and served the food at the same temperature. Carlos only conducted 1 trial for each type of food.
How can you make this experiment better?
Repeated experimentation (MORE TRIALS!!!) always makes an experiment better.
200
What vocab word does this definition belong to:
A substance that cannot be subdivided using chemical means; identified by the number of protons in its atoms.
Element
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300
Which Nobel Gas has the largest mass (more protons, neutrons and electrons)?
Older Table = Radon (Rn)
Newer Table = Oganesson (Og)
300
Write down a chemical formula for a compound?
NaCl
H2O
H2SO4
C6H12O6
And Many More!!!
300
What types of elements and how many of each do you need to make a molecule of water?
H2O
300
Write down a situation of a physical change?
Boiling Water
Shredding Paper
Crushing Ice
300
What law states that mass is neither created or destroyed during a chemical reaction?
The Law of Conservation of Mass
300
What vocab word does this definition belong to:
Starting material for a chemical reaction.
Reactant
400
Name 2 elements that would have similar chemical and physical properties to Calcium (Ca)?
Beryllium (Be)
Magnesium (Mg)
Strontium (Sr)
Barium (Ba)
Radium (Ra)
400
How many protons, neutrons and electrons does Aluminum have?
Protons and Electrons = 13
Neutrons = 27 - 13 = 14
400
How many of each atom are in the following chemical formula? Make a list
3(NH4)3PO4
N = 3 x 1 x 3 = 9
H = 3 x 4 x 3 = 36
P = 1 x 3 = 3
O = 4 x 3 = 12
400
What happens to the atoms during a chemical reaction?
The atoms are rearranged to form new molecules
400
Write down a situation of a chemical change?
Rusting Iron
Burning Coal
Exploding Substance
400
What vocab word does this definition belong to:
Outer electrons most likely to participate in bond formation or a chemical reaction.
Valence Electrons
500
Where are the reactive metal families (Alkali and Alkaline Earth Metals) located on the Periodic Table?
Metals are to the left of the bold, zig-zag line
Reactive metals are on the far left of the line (groups 1 and 2)
500
Is the following chemical equation balanced or unbalanced?
CH4 + 2O2 --> CO2 + H2O
Unbalanced
CH4 + 2O2 --> CO2 + H2O
C = 1 C = 1
H = 4 H = 2
O = 4 O = 3
CH4 + 2O2 --> CO2 + 2H2O
500
Explain the motion of the molecules during condensation?
The gas molecules lose energy and slow down to form a liquid
500
What are 3 signs of a chemical reaction?
1. Color Change
2. Change in Temperature
3. Production of an Odor (Smell)
4. Formation of a Gas (Bubbles)
5. Formation of a Solid (Precipitate)
500
Explain what would happen to the mass (increase, decrease or stay the same) after this chemical reaction is complete?
Mass is always conserved or stays the same
Law of Conservation of Mass!!!
500
What vocab word does this definition belong to:
Chemical species formed by two or more atoms that share chemical bonds such that they form one unit.
Molecule
