Chemical & Physical Reactions
Increasing the temperature of a reaction will do this to the rate of the reaction.
What is increase the speed?
Salt is an example of a substance that always has this.
What is the same composition and properties?
Anything that has mass and takes up space.
What is matter?
This occurs when atoms slow down so much that they are barely moving.
What is freezing?
Matter cannot be created or destroyed, it can only be rearranged.
What is the Law of Conservation of Mass?
This is any change to a substance that results in the creation of a new substance.
What is a chemical change?
All matter can be described by these two things.
What is its physical and chemical properties?
These are the three subatomic particles found in an atom.
What are protons, neutrons, and electrons?
This process is a result of a gas cooling and forming a liquid.
What is condensation?
These are the substances that are present before and after a chemical reaction.
What are products and reactants?
The appearance of this when mixing baking soda and vinegar is evidence of a chemical reaction.
What is gas/are gas bubbles?
Water displacement is a way to measure this.
What is the volume of an irregular object?
Over hundreds of years, scientists discovered that atoms are mostly this.
What is mostly empty space?
This principle explains that when the temperature of a gas decreases at a constant pressure, its volume decreases.
What is Charles' Law?
Experiments performed in a closed system demonstrate this theory well.
What is the Law of Conservation of Mass?
The following three changes, burning, tarnishing, and rusting are examples of this kind of change.
What is a chemical change?
This is how you can determine the density of an object.
What is by dividing the mass by its volume?
A mixture when there are multiple substances in one space that are not this.
What is chemically combined?
This principle explains that at a constant temperature, when the pressure of a gas is increased, the volume of the gas decreases.
What is Boyle's Law?
This is a way to show a chemical reaction with symbols instead of words.
What is a chemical equation?
A reaction that releases energy in the form of heat.
What is an exothermic reaction?
Length x width x height is the formula for this measurement.
What is the volume of a regular object?
A compound is different than a mixture because the molecules are this.
What is chemically combined?
What is the pressure of the gas increases?
This is the balanced equation of the chemical reaction: Na + F2 --> NaF.
What is 2Na + F2 --> 2NaF?