Classifying Matter
Matter made up of two or more substances but keep their own properties.
What is a mixture?
The smallest partical is...
What is an atom?
A charcteristic of a substace that can be observed without changing it into a new substance.
What is a physical property?
Group 1 of metals on the periodic table are called...
What are 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."
What is the law of conservation of mass?
Matter made of only one kind of atom.
What is an element?
The periodic table can be divided into...
What are metals and non-metals?
A charcteristic of a substance that describes its ability or inability to change into a new substance.
What is a chemical property?
Group 2 of metals on the periodic table are called...
What are alkaline earth metals?
What law says this...
"Every pure substance always contains the same elements combined in the same proportions by mass."
What is the law of definite proportions?
A mixture that lets you see the different parts.
What is a hetrogeneous mixture?
The charge of a electron is....
What is a negative charge?
Any change that alters the form or appearance of matter, but does not make a new substance.
What is a physical change?
Groups 3-15 of metals on the periodic table are called...
What are transition metals?
A system that allows matter to move in or out.
What is a open system?
What is a homogeneous mixture?
The atomic number tells you the number of...
What are protons?
A change that transforms the matter into one or more new substances.
What is a chemical change?
Atomic numbers 57-71 on the periodic table are called...
What are lanthanide series?
A self contained and isolated system in which matter can not enter or exit.
What is a closed system?
Matter made up of 2 or more kinds of atoms that are chemically combined.
What is a compound?
The three basic catigories of elements are...
What 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
What is tarnishing, color change, and change in temperature?
Atomic numbers 89-103 on the periodic table are called...
What are 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.
What are coefficients and subscripts?