Chem 1
These are the smallest units of matter that retain the identity of an element.
Atoms
Bond formed when atoms share electrons.
Covalent Bonding
A substance with pH less than 7.
Acidic
The ability to do work.
Energy
The force that pulls objects toward the center of the Earth.
Gravity
The number of protons in an atom is called its ____.
Atomic Number
Bond formed when electrons are transferred from one atom to another.
Ionic Bond
The formula for acceleration
a = Δv / t
Work = Force multiplied by ____.
Distance
The change in position of an object over time.
Motion
This model describes electrons as existing in probability clouds, not fixed orbits.
Quantum mechanical model
The bond created by the attraction between molecules with partial charges (e.g., water).
Hydrogen Bond
A reaction where a substance gains oxygen.
Oxidation
Energy stored due to an object’s height.
Gravitational Potential Energy
The region around a magnet where magnetic forces act.
Magnetic Field
Atoms of the same element that have different numbers of neutrons are called ____.
Isotopes
The type of bond in metals where electrons move freely among atoms.
Metallic Bond
A 10 kg box accelerates at 2 m/s².
5 kg . m/s^2
Device that converts electrical energy into mechanical energy.
Electric Motor
Newton’s law stating that for every action, there is an equal and opposite reaction.
Newton's 3rd Law of Motion
Atoms of the same element that have different numbers of neutrons are called ____.
Mass Number
This describes the tendency of an atom to attract electrons in a bond.
Electronegativity
A 2 kg ball is moving at 3 m/s.
6 kg . m/s^2
Speed of light in vacuum.
8.00 x 10 ^8
The number of wave cycles per second.
Frequency