CH 1
What is the base building block of matter.
The atom
What is the symbol of Oxygen?
O
What state of matter has the weakest attractive forces?
Gas
What subatomic particle is found outside the nucleus?
Electron
Is carbon a metal, nonmetal, or metalloid?
Nonmetal
What is an independent variable?
A variable that is controlled by the experimenter
What is the symbol for Copper?
Cu
Shape = Indefinite
Volume = Definite
What is the charge of the neutron?
Neutral
What do we use to organize the modern periodic table
Atomic Numbers
What is a dependent variable?
A variable that responds to the controlled variable
What is an intensive property?
A physical property depending on the type of substance.
What is it called when a gas changes to a liquid?
Condensation
What is mass number?
The number of protons and neutrons in the nucleus of an atom.
What is the name for a horizontal section of elements on the periodic table.
Periods
What is chemistry?
The study of matter
What is an extensive property?
A physical property that depends on the amount of a substance.
What effect does temperature have on the pressure of gas in a closed system?
Increasing temperature increases pressure. Decreasing temperature decreases pressure
What is atomic number.
The number of protons in the nucleus of an atom.
What did Mendeleev use to organize the old periodic table?
Relative Masses
Why are models useful in chemistry?
They help us simplify complex ideas and represent really small objects.
What is a heterogenous mixture?
A mixture that has a varying composition throughout.
What is gas pressure?
The outward force of gas particles colliding with the walls of their container
What is an isotope?
An atom of the same element that differs in the number of neutrons.
What element would you expect to have similar properties to Oxygen?
Sulfur, Selenium, Telluriumum