Chapters 1-3 Vocab
Has mass and takes up space
What is Matter?
The number of forms in which matter exists
What is 4?
a substance made of only one kind of atom
What is an element?
Particles made of up protons, neutrons, and electrons
What is an atom?
Chemists most important tool that organizes the elements
What is the periodic table of elements?
The study of the composition, structure, and properties of substances and the transformations they undergo
What is Chemistry?
Does not have definite shape, weight, or volume
What is a gas?
Ca
What is Calcium?
Where the protons and neutrons are found in the atom
What is the nucleus?
the 7 horizontal rows the periodic table
What are periods?
a substance that is made up of 2 or more elements bound together in a constant ratio
What is a compound?
has a definite shape and definite volume
What is a solid?
Li
What is Lithium?
A variation of an atom or atoms based on the loss or gain of an electron. This changes the charge of the atom.
What is an ion?
The vertical columns of the periodic table
What are groups (or families)?
A substance that is made up of 2 or more elements that are not bound together
What is a mixture?
is a hot gas whose matter is broken into charged particles
Na
What is Sodium?
What is Atomic Mass?
This is found when you subtract the atomic number (protons) from the atomic mass
What is the number of neutrons?
A slight variation of of the number of neutrons in any element
What is an isotope?
does not have a definite shape, but conforms to the shape of its container
What is a liquid?
Atomic number of 14 and weight of 28
What is Silicon?
an atom with more electrons than protons
What is an anion?
If an element has 7 protons and 6 electrons, it is called what kind of ion?
What is a cation?