Matter
Atoms
What is the purpose of the periodic table?
To organize elements with similar properties
A pure substance with only one type of atom is called an
element
Which law states that matter is not created or desroyed
Law of Conservation of Matter
What personal equipment should be worn at all times during the lab? Name at least 1
Which subatomic particles are found in the nucleus and are 1 amu (atomic mass unit)?
Proton and Neutron
The atomic number also tells you the number of ________ an atom has.
Protons
Elements with different numbers of neutrons are called
isotopes
What is a chemical bond?
The force that holds atoms together in a compound from the sharing or transfer of electrons.
What is the protocol for cleaning broken glass?
Notify the teacher, must be put in glass disposal, not regular trashcan.
If an ion has more electrons than neutrons, it has a ____________ charge.
Negative
Nonmetals are found on which side of the periodic table?
Right
Define valence electron.
Outer electrons of an atom that are able to bond.
Which type of bond involves the sharing of electrons between nonmetals?
covalent
True or False: Leftover chemicals can be put back in their original containter.
FALSE: Chemicals can never go home, must be disposed of safely.
Which subatomic particle is involved in bonding?
Electron
What are the last two groups of the period table called?
Halogens and Noble Gases
Which element has 8 protons and 8 neutrons?
Oxygen
Which type of bond involves the transfer of electrons from one atom to another between metals and nonmetals?
True or false: To identify chemicals by their smell, you should hold the container away from your face and waft the vapors above the container.
TRUE! Do not sniff chemicals directly.
Define ion
Charged atom or particle
What are groups and periods in the periodic table?
Groups are vertical columns and have atoms with the same amount of valence electrons, periods are horizontal rows that have elements with the same number of atomic orbitals.
Which element has 33 protons and 42 neutrons?
Arsenic
Define the octet rule.
Atoms have a tendency to bond in a way that they will have 8 electrons in their outer shell.
Say one lab safety rule not asked here.
No eating or drinking in the lab, tie back hair or loose clothes, wash hands after the lab, keep lab bench clear of backpacks and belongings