Physical/chemical properties/changes
More properties
Elements and the Periodic Table
Chemical reactions
Atomic Structure
100
Evaporation is this.
What is a physical change?
100
The density of a substance is this.
What is a physical property?
100
Over 100 of these are found on the periodic table.
What is an element?
100
On the left side of a chemical equation you have these and on the right you have this.
What are reactants and products?
100
What two subatomic particles are housed in the nucleus?
What are protons and neutrons?
200
This word means that a substance can be pounded into thin sheets and is a characteristic of metals.
What is Malleable?
200
The flammability of an object is this?
What is a chemical property?
200
Elements found in the same period have this in common.
What are the same numbers of energy levels or shells.
200
This is the number of atoms contained in the following equation C6 H12 O6
What is 24 atoms?
200
Fluorine is in group 17 on the periodic table. This is what it needs to do to become stable.
What is gain 1 electron?
300
This property makes metals suitable for use in electrical wiring.
What is being ductile?
300
Valence electrons determine this property of an element?
What is reactivity?
300
The atomic number of a substance can tell us two things about the atomic structure of that element (assuming it is neutral).
What is the number of protons and electrons?
300
A chemical reaction produces two new substances each weighting 25 grams. This is the total mass of the reactants.
What is 50 grams?
300
Magnesium is in group 2 on the periodic table. This is what its charge becomes when it bonds to become stable.
What is positive 2?
400
This property best describes why metals are used for making pots and pans used for cooking.
What is being a good conductor?
400
Burning, rotting, rusting, and the formation of precipitates are all examples or evidences of this kind of change/reaction.
What is a Chemical change/reaction?
400
This group of elements is located in a zigzag line toward the right side of the peroidic table and have characteristics of metals and nonmetals.
What are metalloids?
400
If the reactants contain 12 carbon atoms and 4 oxygen atoms, this must be true of the products.
What is the products must contain 12 carbon atoms and 4 oxygen atoms?
400
This is how many electrons each of the first three orbitals hold.
What is 2, 8, 8?
500
A bike rusting is this.
What is a chemical change?
500
Bob tries to disprove this law by burning a log. He weighs the log before he burns it and it has a mass of 25 grams. After burning the log, he weighs the ashes and finds that they have a mass of 17 grams. Bob think that he has dissproved this law, but in reality the rest of the mass was given off as smoke.
What is The law of Conservation of Mass?
500
These are negativly charged and help determine how and what the element can bond with to make compounds. For an element to be stable it must have 8 of these in its outer shell.
What are valence electrons?
500
How many molecules of sugar are present in the following chemical formula for sucrose? 8 C6 H12 O6
What is 8 molecules?
500
This is the charge of the nucleus.
What is neutral?
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