Elements, Compounds, Mixtures Flashcards
What is a Periodic Table?
A table of all the known elements in order of their atomic number.
What is a Group?
Vertical columns on the periodic table.
What is a period?
Horizontal rows on the periodic table.
What is an Atom?
The smallest piece of an element.
What is an Element?
A substance containing only one type of atom.
What is a Compound?
Two or more different elements, which are chemically joined together.
What is a Mixture?
Two or more different elements or compounds which are not chemically joined together.
What is a Chemical Reaction?
A process in which one or more substances are changed into others, by their atoms being rearranged. Also known as irreversible reactions.
What is a Physical Reaction?
A process in which the physical properties are changed, but no new substances are made. Also known as reversible reactions.
What is a Reactant?
A substance that reacts together with another substance to form products during a chemical reaction.
What is a Product?
A substance formed in a chemical reaction.
What is a Conservation of Mass?
The total mass of the products in a chemical reaction will be the same as the total mass of the reactant.
