5 th Grade Science Chapter 3 Vocabulary Mrs. Thornburg’s version
Vocabulary in 5 th Grade Science Ch. 3 Physical PropertyMixture Chemical PropertyCompound Change of StateElement Physical ChangeMolecule Chemical ChangeNucleus Chemical ReactionAtom Law of Conservation of Mass
What do we call the smallest unit of an element that has the properties of that element?
Atom
What do we call the central part of an atom, made up of neutrons & protons?
Nucleus
In chemistry, what do we call a substance that is made of only one kind of atom and cannot be split into a simpler substance?
Element
What do we call a group of two or more atoms that are joined chemically?
Molecule
What occurs when matter changes from one state to another, such as from a liquid to a gas?
Change of state
What do we call a change in which a substance remains the same substance?
Physical Change
What do we call a combination of two or more different substances?
Mixture
What do we call a trait, such as color, shape or hardness, that describes a substance by itself?
Physical property
What do we call a property that involves the ability of a substance to react with other materials to form new substances?
Chemical property
What do we call a change in which a substance or two becomes a new substance or two?
Chemical change
What do we call a change in which one or more new substances are formed?
Chemical reaction
What do we call a substance made of two or more different elements?
Compound
What do we call it when the mass of the products of a chemical reaction equals that mass of the reactants?
Law of conservation of mass