Science Vocabulary BingDensity/Ch. 2/Ch. 3 Matter

Density, hardness, texture, state of matter, boiling point and color are examples of…

=Physical Properties (of matter)

Anything that has mass and takes up space…

=matter

An _________ is a pure substance that cannot be broken down into any other substances by chemical or physical means.

Examples Oxygen, Nitrogen, Hydrogen, Gold

=Element

A compound can be represented by a ____________ ___________ , which shows the elements in the compound and how many atoms are present.

=chemical formula

solid, liquid, gas and plasma are examples of

=states of matter

A __________ __________ is a characteristic of a pure substance that describes its ability to change into different substances.

=Chemical properties

Atoms that are held together by chemical bonds form larger particles called …

=molecules

If a piece of metal has a mass of 50 grams and a volume of 2 cubic centimeters, what is its density?

=25 grams/cubic centimeter

Salt (NaCl) Water (H20) Iron (Fe) Gold (Au)These are all examples of ____ ________

because they can only be broken down by chemical means.

=pure substance

An _______ is the basic particle from which all elements are made.

=atom

What kind of energy is stored in the foods you eat, and in the cells of your body?

=Chemical Energy

When energy is given off.

a wood fire releasing energy in the form of light and heat.

=exothermic energy

A change in which energy is taken in

The reason you pack food and drinks in an ice-filled picnic cooler to keep them cold.

or Ice melting

=endothermic change

A __________ is made of two or more substances - elements, compounds, or both- that are together in the same place but are not chemically combined.

=mixture

The study of properties of matter and how matter changes.

=Chemistry

The amount of space an object takes up is its…

Length X Width X Height =

=Volume

This form of energy travels through space in the form of waves.

=one form Is visible light

=electromagnetic energy

What is the force that holds two atoms together in a chemical formula (compound)?

=chemical bond

A _______ _______ is any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance.

Example water changing from a liquid to gas

=Physical Change

How do you calculate the volume of an irregularly shaped object?

=Water Displacement

The amount of particles packed into a given amount of space

The formula is Mass

Volume

=Density

The substances in a _________ __________ you can not see the different parts.

=homogeneous mixture

The fact that matter is never created or destroyed in any chemical or physical change is called the…

=law of conservation of matter

A _________ is a pure substance made of two or more elements chemically combined in a set ratio.

=compound

_______ _______ is the total energy of all of the particles in an object.

=Thermal Energy

A ________ has a definite volume but NO shape of its own. Particles flow, and move past one another. They do not have a definite pattern.

=liquid

_______ is the ability to do work or cause a change.

= Energy

A _________ _______ is a change in matter that produces one or more new substances…

Example…mixing sulfuric acid and sugar and a new substance charcoal is formed.

=Chemical Change