Chemical Equations
In a chemical reaction the substances to the right of the arrow are called this/these?
What is/are products?
when substances break apart to form new substances with different properties
What is a chemical change?
Type of energy released or absorbed by a chemical reaction
Thermal or Light (Electromagnetic) energy
This is the ratio of mass per volume
This number represents the number of a molecules in a chemical reaction
what is the coefficient?
A characteristic of matter that can be observed as it changes into a different type of matter (ex. Flammability)
Chemical Property
Reaction where more energy is absorbed than released
What is an endothermic reaction?
two or more atoms that are held together by covalent bonds.
What is a molecule?
A substance that enters a chemical reaction is called this.
What is a reactant?
Give three examples that a chemical change has taken place.
What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?
This is energy stored in the molecules
What is a chemical potential energy?
A characteristic of matter that can be observed without changing the identity of the matter (ex. Density)
What is a physical property?
These numbers represent the number of atoms of a specific element in a molecule
What is a subscript?
chemical reaction where plants use the sun's energy to convert CO2 and H2O into Glucose and O2
what is photosynthesis?
Reaction where more energy is released than absorbed
What is an exothermic reaction?
The amount of matter in an object
What is mass?
When something is dissolved in water
What is a solution?
Challenge: This type of reaction is when a substance reacts with agents such as oxygen, chlorine, or bleach. Also known as rusting in some cases
What is oxidation?
State the Law of Conservation of Energy.
What is that Energy can not be created or destroyed in a chemical reaction?
A molecule consisting of two atoms. Ex: O2 or H2
What is diatomic?