5th Grade Science Unit 2 Vocabulary

Textbook, SAMS, and external vertical team words

Mrs. Thornburg’s version

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

What do we call one of the very small parts in the nucleus of an atom that carries a positive electrical

charge?

Proton

What do we call one of the extremely small parts in the nucleus of an atom that has no electrical charge?

Neutron

What do we call a tiny particle that moves around the nucleus of an atom? (It carries a negative

electrical charge.)

Electrons

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 it when something seems to disappear when mixed with liquid?

Dissolve

What do we call a mixture made up of a substance that has been dissolved in a liquid?

Solution

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

What do we call anything that has weight and takes up space as a solid, liquid, or gas?

Matter

What do we call the amount of physical matter an object contains?

Mass

What do we call a unit such as ounce, pound or ton, that is used for measuring?

Weight

What do we call the amount of space taken up by a three-dimensional shape such as a box or a room?

Volume

What do we call a tool that measures an object’s mass?

Balance

What do we call something that measures forces, such as weight or friction, or heat and cold?

Scale

What do we call a tool used to make quantitative observations of the volume of liquids?

Graduated cylinder

What do we call an observation that involves numbers or measurements?

Quantitative observation

What do we call an observation that does not involve measurements or numbers?

Qualitative observation

What do we call a substance that is hard and firm, not liquid or gas?

Solid

What do we call a wet substance that pours?

Liquid

What do we call a substance, such as air, that will spread to fill any space that contains it?

Gas

What do we call changing from a liquid to a gas?

Evaporation

What do we call changing from a gas to a liquid?

Condensation

What do we call the temperature at which a liquid that has been heated turns into a gas?

Boiling point

What do we call the temperature at which a liquid turns solid or freezes?

Freezing point

What do we call the temperature at which a substance changes from a solid to a liquid because of

heat?

Melting point

What do we call measurement of temperature using a scale on which water boils at 212 degrees and

freezes at 32 degrees?

Fahrenheit

What do we call a measurement of temperature using a scale on which water boils at 100 degrees and

freezes at 0 degrees?

Celsius