Classifying Matter
Matter made up of two or more substances but keep their own properties.
A mixture
The smallest partical is...
An atom
A charcteristic of a substace that can be observed without changing it into a new substance.
Physical property
Group 1 of metals on the periodic table are called...
Alkali metals
What law says this...
"In a chemical reaction the total mass of all the reactants must equal the total mass of the product."
The law of conservation of mass
Matter made of only one kind of atom.
An element
The periodic table can be divided into...
Metals and non-metals
A charcteristic of a substance that describes its ability or inability to change into a new substance.
Chemical property
Group 2 of metals on the periodic table are called...
Alkaline earth metals
What law says this...
"Every pure substance always contains the same elements combined in the same proportions by mass."
The law of definite proportions
A mixture that lets you see the different parts.
A hetrogeneous mixture
The charge of a electron is....
A negative charge
Any change that alters the form or appearance of matter, but does not make a new substance.
Physical change
Groups 3-15 of metals on the periodic table are called...
Transition metals
A system that allows matter to move in or out.
A open system
A mixture that doesnt let you see the diffrent parts.
A homogeneous mixture
The atomic number tells you the number of...
Protons
A change that transforms the matter into one or more new substances.
Chemical change
Atomic numbers 57-71 on the periodic table are called...
Lanthanide series
A self contained and isolated system in which matter can not enter or exit.
A closed system
Matter made up of 2 or more kinds of atoms that are chemically combined.
A compound
The three basic catigories of elements are...
Metals, non-metals, and metaloids
Of the following characteristics 3 are of a chemical change...
tarnishing , Change of state , Temperature change Color change , Change of shape/form , Moving and separating
Tarnishing, color change, and change in temperature
Atomic numbers 89-103 on the periodic table are called...
Actinide series
Within a chemical formula the ______ tells you the number of molecules of that substance and the _____ tells you the number of atoms of each element.
Coefficients and subscripts