Vocabulary
The smallest unit of matter used in this class.
An atom
The 3 active chemicals in our bath bomb reaction.
Matter cannot be created or destroyed, it only transforms.
The Law of Conservation of Matter
The equation for calculating density.
Mass/Volume
The energy contained in the bonds between atoms and molecules.
Chemical Energy
Any two or more atoms chemically bound together.
A molecule
The common name for Sodium Chloride (NaCl)
Table Salt
In this chemical system, the reactants and products of a reaction cannot leave.
Closed System
The unit our class uses for density.
grams/milliliter (g/ml)
The total number of different types of energy.
7
The process of atoms being rearranged to create new substances.
Chemical Reaction
The chemical formula for Citric Acid
C6H8O7
True or False: New substances can be created by a chemical reaction.
True (remember a substance is different than an atom or molecule)
This relative density will force an object or material to drop, sink, or fall.
Greater/More/Larger/Higher
The energy based on the vibration of molecules within a substance (hint: its measured with a thermometer)
Thermal Energy
The amount of matter in an object compared to the amount of space it occupies.
Density
NaHCO3
Baking Soda or Sodium Bicarbonate
The type of system where measuring a change in mass is reasonable.
Open System
The density of an object with a mass of 48 grams and occupying a volume of 6 milliliters.
8 g/mL
The energy based on waves moving through a medium like air or water (hint: cannot move through a vacuum like space)
Sound/Audio Energy
A chemical reaction that releases energy by breaking chemical bonds.
Exothermic
The total number of different NATURALLY OCCURING atoms.
94
A chemical reaction of 5 grams of one reactant, 7 grams of another reactant, and 13 grams of a final reactant in a closed system will have this total mass in the products.
25 grams
The process for measuring the volume of an irregular shaped object.
Submerging the object in water and measuring the displacement.
The energy holding the nucleus of atoms together.
Nuclear Energy