This quiz let is over Sci_1101 Ch 2 pt 1 for online if you see any mistakes please fix them
geothermal power plants in North California that produce electricity for millions.
Matter and Energy
Answer Format (___ and ___) two essential constituents of both the universe and living organisms.
What in science is neither created nor destroyed but is recycled endlessly? Classified as everything that takes up space and has mass in the universe. Virtually everything is composed of this in the universe.
event that formed the four lightest elements (H,He,Li,Be) (Don't be alarmed zombie brains and chocolate cake came later.)
Heavier elements could not be manufactured until there was a significant amount of ________. (Happened later after the BB)
Stars and Supernovae
The other 88 elements were made later in ____and____. (Hint S & S)
the capacity to do work.
Hydrogen and Helium
99% of the universe is composed of ____ and ____. (Hint H & H)
Are giant fusion reactors forcing atoms to fuse together due to gravity at the center of them.
Solid, Liquid and Gas
Most matter or materials substances can exist in three interchangeable states ___, ___ and ___.
Air, Water, Fire and Earth
The ancient Greek philosophers though that a great variety of matter arose from 4 basic ingredients ___,___,___ and ___. They though the substances were pure and couldn't be broken down anymore.
This 5th century BC Greek philosopher argued that substances can be separated to a "smallest piece" with he called "atomon" with has be converted to "atom".
Early 1800's scientist that through lab experiments found that most substances could be broken down into another but there was a few that couldn't.
substances that cannot be broken down into other substances by chemical reactions.
Today we recognize ___ number of elements.
Today we recognize ___ number of naturally occurring elements
Today we recognize ___ number of elements created under special conditions (unstable)
Of the 115 elements just 4 Oxygen, Carbon, Hydrogen and nitrogen make up __% of living organisms.
are made up of 3 types of smaller particles called sub-atomic particles.
Positively charged sub-atomic particles found at the center of the atom. The number of these in the nucleus equals the atomic number of the element.
Neutrally Charged sub-atomic particles found at the center of the atoms made up if one proton and one electron. Holds the nucleus together.
These subatomic particles orbit the neutrons and protons near the speed of light. They are negatively charged and weight 1/1860th as much as proton or neutron
Name of Element with 1 proton and 1 electron
Contains 99.9% of the atom's mass, Composed of Neutrons and Protons, The nucleus overall has a positive charge.
Answer format (___,___)The number of _____ found in orbital circles must equal the number of ______ found in the nucleus to maintain electrical neutrality.
Answer Format (___,____)All ____ is composed of tiny moving particles separated by space and held together by ______.
This elements Atomic number = 6, Protons = 6, Neutrons = 6 and Electrons =6.
This elements Atomic number = 7, Protons = 7, Neutrons = 7 and Electrons =7.