Atoms & Elements
The smallest unit of an element that still has properties of that element
What is an Atom?
Two or more atoms held together by chemical bonds
What is a Molecule?
A process where substances change into new substances with different properties
What is a Chemical Reaction?
A combination of two or more substances that are not chemically bonded
What is a mixture?
A characteristic that describes how a substance can change into something new (like flammability or rusting)
The number of protons in an atom's nucleus; it identifies the element
What is Atomic Number?
A pure substance made of two or more elements chemically combined
What is a Compound?
What is Balanced?
A mixture where the parts are not evenly mixed and can often be seen ( like salad)
What is a Heterogeneous Mixture?
A change that forms one or more new substances with different properties
What is a Chemical Change?
A pure substance made of only one kind of atom
What is an Element?
A set of symbols that shows the elements in a substance and how many atoms of each are present
What is a Chemical Formula?
The large numbers placed in front of formulas to show how many molecules are involved
What are Coefficients?
A mixture that is evenly mixed and looks the same throughout (like salt water)
What is a homogeneous Mixture?
The amount of matter in an object
What is Mass?
The force that holds atoms together in a molecule or compound
What is a Chemical Bond?
The principle that matter is not lost or gained, only rearranged during reactions
What is Conservation?
When two or more things are out together but not chemically bonded
What is a combination?
Anything that has mass and takes up space
What is Matter?
What something is made of; the parts or ingredients of a substance
What is Compostion
States that matter cannot be created or destroyed in a chemical reaction
What is the Law of Conservation of Mass?