Properties
What is Density?
Mass/Volume
What is Elasticity?
The ability for a material to stretch and return to its original shape.
What are rows called on the Periodic table.
Periods
What happens to molecules when you add or remove heat energy and how does that result in a phase change?
Adding energy to molecules makes them faster and become more disorganized. It results in phase changes between the phases (Liquid to solid, ect)
What is Conductivity?
The measure of somethings ability to transmit forms of energy.
What is Corrosivity?
The ability for a substance to destroy other substances
How can you tell how many Electrons/Protons a element has on the Periodic table?
The atomic Number.
What is a coefficient?
What is a number placed in front of a chemical symbol or formula that shows how many atoms or molecules of the substance are involved in the reaction
What is Reactivity?
The tendency or frequency of something to react to an element.
What is Flammability?
How easily a substance will be lit on fire.
How can you tell how many neutrons a element has on the Periodic table.
Atomic weight - The atomic number.
What is a subscript?
Subscripts are tiny numbers set below an elements symbol and tell how many atoms are in the molecule.
What is the law of conservation of Matter?
Matter cannot be created nor destroyed
What is Solubility?
The ability for a substance to dissolve
What is Malleability?
How easily we can roll a substance into a sheet.
What are the separate groups called on the periodic table? (Alkaline metals, Noble Gases, ect)
Families
What is an insulator?
A material that resist the flow of electrons
What are the 2 of the signs a chemical reaction has occured.
a change in color, a change in odor, the production of a gas, the formation of a precipitate, and a change in energy.
What is Oxidation?
The process where a substance reacts to oxygen.
What are the differences between Physical and Chemical Properties?
Physical are characteristics observed or measured without changing a substance, Chemical only are apparent during a change.
Which family has the most reactive elements on the periodic table?
Alkaline metals or Halogens
What is a conductor?
A material that allows electrons to flow freely through it.
How will the density change when a solid melts and becomes a liquid
The density will decrease.