Science Flashcards
What must matter have?
Mass and Volume
What is Mass?
Substance - Amt of matter contained in an object
What is Volume?
Amount of space an object takes
What is Density?
Measure of how light or heavy something is for its size.
What is the formula for Density?
Mass/Volume
The tighter the molecules the…..
Denser the matter
What are substances which can’t be broken down into something simpler
Element
What is a compound?
When elements combine together
What are atoms?
Tiny particles that make up all matter
What are the parts of an atom?
Protons, Neturons and Electrons
What is the center of an atom called?
Nucleus
What is in the nucleus of an atom
Protons and Neutrons
What moves around the nucleus in the atom?
Electrons
Which part of an atom is positive
Protons
Which part of an atom is negative?
Electrons
Which part of an atom neutral
Neutrons
True/False - the # of neutrons equals the # of electrons?
True
What is temperature?
It is a measure of the speed with which atoms and molecules move (kinetics energy)
Heat is a measurement of…..
Of the total energy
What type of force requires direct contact?
Contact Force
What force does not require contact?
At-a-distance force
What is light?
It is energy with low weight and low density.
Optics is a branch of what science?
Physics studies lights.
Different types of energy
Chemical Electrical Magnetic Mechanical Nuclear Radiant/light Solar Sound Thermal
What is chemical energy?
Energy stored in things like food, fossil fuels, and explosives
What is nuclear energy?
Energy stored in the nucleus of an atom
What is electrical energy
Made by the flow of a electrical charge through a conductor