Matter
This property of a substance describes how much mass it has in a certain volume.
What is density?
In a chemical reaction, the total number of these remains the same before and after the reaction occurs.
What are atoms?
A push or a pull that can change the motion of an object is called this.
What is a force?
This type of energy is the energy of motion and depends on both the mass of an object and its speed.
What is kinetic energy?
A disturbance that travels through matter or space, carrying energy from one place to another, is called this.
What is a wave?
A physical change that occurs when water turns into ice.
What is freezing?
This law states that matter cannot be created or destroyed in a chemical reaction; the mass before equals the mass after.
What is the Law of Conservation of Matter?
Newton's Third Law states that for every action, there is an equal and opposite this.
What is a reaction?
When you lift a book off the floor and place it on a shelf, you increase this type of energy due to its new position.
What is potential energy?
The height of a wave from its center line to its peak is called this, and it is directly related to the energy carried by the wave.
What is amplitude?
When salt dissolves in water, this type of mixture forms because the salt is evenly distributed throughout.
What is a (homogenous) mixture?
A chemical reaction that releases thermal energy to the surroundings is called this type of reaction.
What is an exothermic reaction?
The force that pulls objects toward Earth's center and keeps you on the ground is called this.
What is gravity (or gravitational force)?
The transfer of thermal energy from a hot object to a cold object is called this.
What is heat?
When a wave's amplitude increases, the energy in the wave does this...
What is increase?
The building block of matter
What is an atom?
A chemical reaction that absorbs thermal energy is called this type of reaction.
What is an endothermic reaction?
What is friction force?
When you add thermal energy to a substance, the average kinetic energy of its particles increases, causing this property to rise.
What is temperature?
What is white?
List two signs that a chemical change has occurred.
Color change, temp change, odor, a solid forms
Two or more atoms bonded together is called a...
What is a compound?
The equation to calculate velocity
Velocity= distance divided by time
In a closed system, when a ball rolls down a ramp and slows down on a flat surface due to friction, the kinetic energy is transferred to this form of energy, which explains why the surface becomes slightly warmer.
What is thermal energy?
As the frequency of a sound waves increases, what happens to the sound wave?
The pitch goes up