Matter: matter never changes wherever you are
Mass: the amount of matter that occupies something, changes with different gravitational pull.
Physical change: A change that can be reversed, no new substance is created. The product may change shape but won't change state.
Chemical Change: A brand new product is formed e.g. gas bubbles, endothermic / exothermic reactions, colour change, and state change, etc...
Volume: The amount of space occupied by a three-dimensional object as measured in cubic units.
Reactant & Product: Na (reactant) + Cl (Reactant) = NaCl (product)
Corrosion Reaction: A reaction in which metal and oxygen join; the metal is eaten away.
Combustion Reaction: A reaction (chemical) requiring oxygen & producing heat (sometimes light)
Law of conversation of mass: matter is neither created nor destroyed.
Atoms / Molecules (elements / Compounds): atoms are the things that make up a molecule and a molecule is a thing made up of atoms.
Metals are atoms that act a certain way, they also when written as a molecule go first next to and then the non-metals are written, most of the periodical table is made up of non-metals.
Combining capacity: how many atoms can a molecule take until it is chemically stable.
Sublimation: the change of a solid straight to a gas.
Evaporation: the change of water to a gas.
Condensation: the Change of gas to a liquid.
Qualitative properties: has to do with describing something with words
Quantitative Properties: has to do with describing with numbers.
Exothermic Reaction: A reaction that gives off energy (rust, Hydrogen bombs)
Endothermic Reaction: Take in energy (Plants)
Reaction Rate: How long it takes for a solution to react; it also has to do with temperatures.
Concentration: the purer the product is. HCl, dilute is not concentrated.
Density: the mass of a substance...