Physical properties and changes
More properties
Elements and the Periodic Table
Chemical reactions
Chemicals
100
A substance's ability to dissolve.
What is solubility?
100
This property stays the same no matter the amount.
What is Density?
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
This refers to the reactants colliding with other reactants.
What is collision theory?
200
This word means that a substance can be pounded into thin sheets.
What is Malleable?
200
To determine the density of a sample of matter you must know these two quantities.
What is mass and volume?
200
Elements found in the same group have this in common.
What are chemical properties.
200
This is the number of atoms contained in the following equation C6 H12 O6
What is 24 different atoms?
200
These elements exist in nature and are all found on earth.
What are natural elements?
300
This property make metals suitable for use in electrical wiring.
What is ductility?
300
This is the temperature at which a solid turns into a liquid.
What is melting point?
300
The atomic number of a substance can tell us two things about the atomic structure of that element.
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
These elements are not found in nature and are man made.
What are synthetic elements?
400
This property describes if objects can float or sink.
What is density?
400
Color Change, Temperature change, Production of a gas, 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 refers to how much of a medicine you should take. Taking to much can be dangerous.
What is a dose?
500
This property can observed by substances undergoing a chemical reaction.
What is a chemical property?
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. F
What are electrons?
500
The following is eveidence that a chemical reaction has taken place.
What is heat is given off, a solid is formed, a gas is given off,...
500
A change that does not produce a new substance.
What is a physical change?
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