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physical science Q1

physical science

QuestionAnswer
physical science The study of matter and energy.
Mass The amount of material an object has.
Physics The study of how energy acts with matter.
Matter Anything that has mass and takes up space.
Chemistry The study of matter and how it changes.
Unit A Known amount used for measuring
Customary Ordinary
Metric System System of measurement used by scientist
meter the basic unit of length in the metric system, it is about 39 inches Metric unit
centimeter 1/100 of a meter
millimeter 1/1000 of a meter
meterstick common tool for measuring length in the metric system
kilometer a metric unit of measure that is equal to 1,000 meters
Area the amount of surface an object has
Exponent a number that tells how many times a number is a factor
gram basic unit in the metric system
kilogram a unit that equals 1000 grams
milligram a unit that measures 1/1000 of a gram
centigram a unit that measures 1/100 of a gram
cubic centimeter a metric unit that means cm X cm X cm
Property characteristics that help identify an object
atom the building block of matter
molecule the smallest part of a substance that keeps the characteristics of that substance
.solids a form of matter that has a definite shape and volume
liquids a form of matter that has a definite volume but takes the shape of the container.
gas a form of matter that has no definite shape or volume
Plasma a very hot gas made of particles that have an electrical charge.
states of matter the form that matter has - solid, liquid and gas.
Element matter that has only one type of atom
Compound A substance that is formed when two or more elements join together
proton subatomic particle with a positive charge
electron subatomic particle with a negative charge
neutron subatomic particle that is neutral
atomic number number of protons in a specific element
atomic mass the number equals the sum of the protons and neutrons
Symbol one or two letters used to represent an element's name
Periodic Table an arrangements of elements by atomic number
Isotope an element that has a different number of neutrons than protons and electrons
Deuterium an isotope of hydrogen that has one proton and one neutron
Tritium an isotope of hydrogen that has one proton and 2 neutrons
Family a group of elements arranged with similar properties and in the same column
metals type of element; usually solid at room temperature, shiny and good conductor
nonmetals type of element with properties unlike metals
noble gases type of elements made up of gases that do not combine with other materials
alloys a mixture of 2 or more metals
inert lacking the power to move
energy level one of the spaces around the nucleus in which electron move
Chemical Formula Tells the kind of atom and how many of each kind are in a compound.
Subscript A number in the formula that tells how many parts are in the compound
Radicals A group of 2 or more atoms that act like 1 atom
Binary compound A compound with 2 elements
acid a compound that reacts with metals to produce hydrogen
base a compound that contains the OH radical
pH number that tells if an item is a base or acid
motion -a change in position
speed rate at which the position of an object changes
distance the length of the path between 2 positions
constant speed speed that does not change
Created by: studymacc123