Science test (lesson 1,2,3) Flashcards
Anything that takes up space
matter
A single object that has uniform properties
Substance
A characteristic of a pure substance that can be observed without changing it
Physical Properties
A characteristic of a substance that describes Its ability to change into another substance
Chemical proprties
The basic particle from which all elements are made
atom
a substance that cannot be broken down into simpler components
Element
A group of two or more atoms held together by covalent bonds
Molecule
A substance made of two or more elements chemically combined in a specific ratio or proportion
Compound
Two or more substances that are together in the same place but their atoms are not chemically bonded
Mixture
A measure of how much matter is in an object
mass
The amount of space that matter takes up
Volume
A measure of the force of gravity acting on an object
Weight
The measurement of how much mass a substance is contained in a given volume
Density
A change that alters the form or appearance of a material but does not make the material into another substance
Physical Change
A change in which one or more substances combine or break apart to form a new substance
Chemical change