Atoms
What is a pure substance made of one type of atom called?
an element
What is 1 of the 3 names for the path that electrons travel in around the nucleus?
orbital, energy level, and electron shell
In what type of bond do 2 or more atoms share electrons equally?
covalent
A reaction that changes only the form or appearance of a substance is _____________________________.
a physical reaction
The ability of someone or something to do work.
When 2 or more atoms are combined, they are called a ________________________________.
molecule
What is the outer energy shell of an atom called?
valence shell
When it comes to atoms, what is the "Octet Rule"?
When an atom has 8 electrons in its outer shell, it becomes stable and less reactive.
A reaction that will change a substance into a different substance is called ___________________________.
a chemical reaction
What is kinetic energy?
energy in motion
What is a compound?
What are the 3 ways that atoms can get a full outer energy shell?
They can give, steal, or share.
What do we call a bond between atoms in which one atom gives an electron and the other atom takes an electron?
ionic bonding
When an object is in free fall, what 2 resisting forces will the object encounter?
air resistance and gravity
What is potential energy?
What is an ion?
It is an atom that does not have the normal number of electrons because it lost or gained an electron from another atom.
It is an atom with a charge.
It is an atom that does not have the same number of electrons and protons.
What kind of energy is found in the nucleus of an atom?
nuclear energy
What type of bond does water have and what atoms are bonded together?
Water has a covalent bond.
One oxygen atom bonds with 2 hydrogen atoms.
What is the law that tells us all objects are attracted to other objects according to their mass and distance?
The Universal Law of Gravitation
What is the law of the conservation of energy?
Energy cannot be created or destroyed, only transformed.
A solid with a regular repeating arrangement of atoms is called _________________________________.
What is an isotope?
An atom with a different number of neutrons than protons.
What type of bond does salt have and what atoms are bonded together?
Salt has an ionic bond.
A sodium atom bonds with a chlorine atom in an ionic bond.
What is the speed limit of a falling object called?
terminal velocity
What is renewable energy?
Name some forms of renewable energy.
Energy made from sources that don't run out.
wind energy and solar energy