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
consisting of parts all of the same kind
Homogeneous
of or denoting a process involving substances in different phases
Heterogeneous
a thing that is composed of two or more separate elements
compounds
cause to change in form, character, or function
convert
purify (a liquid) by vaporizing it, then condensing it by cooling the vapor, and collecting the resulting liquid
distill
the degree or intensity of heat present in a substance or object
Temperature
prevention of wasteful use of a resource
Conservation
the curved upper surface of a liquid in a tube
meniscus
the SI base unit of length, first introduced as a unit of length in the metric system
Meter
the decimal measuring system based on the meter, liter, and gram as units of length, capacity, and weight or mass.
Metric system
Table of conversion
King Henry doesn’t [usually] drink chocolate milk
Kilo- hecto- decka- unit deci- centi- mili-
