Vocab Pt 1
The smallest particle of an element that retains the chemical properties of the element
Atom
The measure of a substance's ability to conduct heat or electricity
Conductivity
What is the basic structure of an atom?
Atoms have a nucleus at the center that is composed of neutrons and protons. Then they have electrons that fly around the nucleus in different shells or layers.
What is Boyle's Law?
At constant temperature, the volume of gas is inversely proportional to the pressure.
What is an electrolyte and why do these substances conduct electricity?
An electrolyte is a compound that conducts electricity in a solution or when it is molten. This is because the ions from the compound are free to move. Cations in an electrolyte carry a positive charge, while anions in an electrolyte carry a negative charge.
A substance made up of two or more different elements that are chemically joined in fixed proportions
Compound
A substance that is formed when two or more atoms chemically join together
Molecule
How are the elements on the periodic table organized?
The elements in the periodic table are organized according to their atomic number
What is Charles' Gas Law?
At constant pressure, the volume of a gas is proportional to the temperature.
Evaporation is one type of separating a mixture. When would you use this method?
Evaporation is used to separate a soluble solution that has been dissolved in a liquid solvent.
The set of elements that have the same number of electron shells shown as rows in the periodic table
Period
A substance that conducts electricity when it is in solution
Electrolyte
From the elements in Group III to Group IV Give two elements that are considered to be metal.
Aluminum, allium, indium, tin, antimony, thallium, lead, bismuth, polonium,
Describe the characteristic of this state of matter - Solid
A solid has a definite shape and volume.
Filtration is one type of separating a mixture. When would you use this method?
Filtration is used to separate a suspension of particles of a solid that are spread through a liquid.
The number of protons in the nucleus of an atom
Atomic Number
A substance made up of open type of atom which cannot be broken down by chemical reaction to form a simpler substance
Element
From the elements in Group III to Group IV Give two elements that are considered to be metalloids
Boron, Silicone, Germanium, Arsenic, Selenium, Tellurium
Describe the characteristic of this state of matter - Liquid
A liquid has a fixed volume but no definite shape.
Centrifuging is one type of separating a mixture. When would you use this method?
Centrifuging is used to separate a suspension when filtering or settling won't work.
The average mass number of the atoms in the sample of an element
Atomic Mass
A measurement of the space occupied by a substance
Volume
From the elements in Group III to Group IV Give two elements that are considered to be nonmetals.
Carbon, Nitrogen, Oxygen, Phosphorous, Sulfur
Describe the characteristic of this state of matter - Gas
A gas has no fixed volume or shape.
Distillation is one type of separating a mixture. When would you use this method?