Mixtures
Pure Substances
L.O.C.O.M.
Atomic Structure
Patterns
100
Two or more elements or compounds that are mixed togetherbut are not chemically combined
What is a mixture?
100
The two main types of pure substances
What is element and compound?
100
What is true of a substance with a lot of mass?
What is "it contains a lot of matter"?
100
The number of protons in a specific element and it is the number one way the periodic table is arranged.
What is, "Atomic Number"?
100
K
What is, "Potassium"?
200
Any combination of substances that has uniform composition and properties by physical means
What is a homogeneous mixture?
200
A sample of matter, either an element or a compound, that consists of only 1 component with definite physical and chemical properties and a definite uniform composition
What is a pure substance?
200
Matter cannot be _________ nor ___________ but only changes _________.
What is "created", "destroyed", and "form"?
200
The total amount of mass of one atom of an elemen. The mass of a nucleus (protons + neutrons)
What is, "Atomic Mass"?
200
A column of elements with similar characteristics
What is, "A group/family"?
300
Any combination that does not have uniform composition and properties by physical means.
What is a heterogeneous mixture?
300
Fixed composition, distinct properties, can't be seperated into simpler substances by physical methods, can only be changed in identity and properties by chemical methods, properties do not vary
What is characteristics of a pure substance?
300
Weight is different from mass because...
What is "weight changes depending on gravity but matter stays the same throughout the universe"?
300
An electron of an atom, located in the outermost shell of the atom, that can be transferred to or shared with another atom (bonding)
What is, "Valence Electron"?
300
The horizontal row on a periodic table
What is a period?
400
The air is an example of what type of mixture?
What is homogeneous mixture?
400
Made up of one type of atom, can't be broken down by physical and chemical methods, (Oxygen, Nitrogen, Carbon)
What is element?
400
Sodium and chlorine combine to form sodium chloride. Sodium and chlorine are...
What is "reactants"?
400
The particle found in the nucleus of an atom with a positive charge; # determines the atomic number of the element
What is, "Proton"?
400
The code that uses chemical symbols and subscripts to identify the number and types of atoms of each element that make up a molecule of a compound
What is Chemical Formula?
500
What is a heterogeneous mixture?
500
What is a compound?
500
According to the Law of Conservation of Matter, 4 grams of hydrogen and 32 grams of oxygen will combine to form...
What is "36 grams of water"?
500
Particle found in the nucleus of an atom with ni charge; # combined with # of protons to determine an element's atomic mass
What is, "Neutron"?
500
One valence electron, VERY reactant, silver in color, (Li, Na, K) are all characteristics of the _________ Metals.
What is, "Alkali"?