Structure of Matter
What is an atom?
The smallest unit of an element that still has the properties of that element.
What is a Compound?
A pure substance made of two or more elements chemically combined.
A process in which substances change into new substances.
What is chemical property?
A characteristic that describes how a substance behaves (e.g., flammability or rusting).
What is Law of Conservation of Mass?
States that matter cannot be created or destroyed it stays the same.
What is Atomic Number
The number of protons in the nucleus of an atom.
What is a Mixture?
A combination of two or more substances that are not chemically combined.
What is Chemical Change?
A change that forms one or more new substances.
What is mass?
The amount of matter in an object.
What is an Element
A pure substance made of only one kind of atom.
What is Homogeneous Mixture?
A mixture that is evenly mixed and looks the same throughout.
What is a chemical formula?
A set of symbols that shows the elements in a substance and the ratio of their atoms.
What is Matter?
Anything that has mass and takes up space.
What is a molecule?
Two or more atoms held together by chemical bonds.
What is Heterogeneous Mixture
A mixture where the parts are not evenly mixed.
What is Coefficient?
The big numbers placed in front of chemical formulas to balance equations, indicating the number of molecules involved.
What is a combination?
When two or more things are put together, but not necessarily chemically combined.
What is a chemical bond.
The force that holds atoms together in a molecule.
What is composition?
What something is made of the parts or ingredients.
What does balanced mean?
When a chemical equation shows the same number of atoms of each element on both sides (reactants and products).
What does Conservation mean?
The principle that matter is neither lost nor gained during a chemical change.