Properties & Classification of Matter
This physical property describes a substance’s ability to resist being scratched.
These are the horizontal rows found in the periodic table
What are periods?
This is the common name for the compound NaCl
What is table salt?
his law states that mass is neither created nor destroyed in a chemical reaction
What is the Law of Conservation of Mass?
this acronym stands for the Workplace Hazardous Materials Information System
What is WHMIS?
This type of pure substance contains only one kind of substance, whereas a compound contains more than one.
This scientist originally organized the periodic table based on atomic mass
In a chemical formula the subscript (s) is sometimes present, this is what the "(s)" indicates about the molecule's state.
Because they absorb energy and feel cold to the touch, sports cold packs are an example of this type of reaction.
What is an endothermic reaction?
Chewing a tablet before swallowing it speeds up a reaction by increasing this factor
What is surface area?
his term describes a cloudy mixture where the particles are so small they cannot be easily separated out.
What is a colloid?
To become this type of ion, an atom must lose electrons.
This is the chemical name for the compound ZnO.
In the reaction "Methanol + Oxygen → Carbon Dioxide + Water," these two substances are the products
What are CO2 & H20
these biological substances help break down food in the human body at lower temperatures.
What are enzymes
This is the physical property of being stretched into a long wire
this is the number of neutrons found in one atom of Potassium (Atomic Number 19, Mass 39.10).
What is 20?
This is the chemical name for the molecular compound N2O3
In cellular Respiration this is the "Fuel"
What is Food (Glucose)
In Order to slow down a chemical reaction what is something you can add this.
What is an Inhibitor
A student observes a metal that reacts with water to form rust, is shiny, melts at 212ºC, and conducts electricity. This is the number of chemical properties observed.
What is one? (Reacting with water to form rust is the only chemical property listed).
Helium, Neon, Argon, Krypton, Xenon, and Radon all belong to this specific chemical family.
The formula NaHCO3 contains exactly this many elements
What is Four
These are a group of ions that "act as one.
What are polyatomic ions
Generally, the greater the concentration of these, the faster the reaction will occur
What are the reactants