Based on your observations from the BTB lab, what colors indicated the solution was an acid or base?
Acid = yellow
Base = blue
400
Which element on the periodic table has a complete set of electrons their energy level?
Neon.
400
True or false? Two or more atoms held together by an ionic bond forms a molecule.
False - a covalent bond forms a molecule. An ironic bond is when an atom transfers an electron to another atom.
400
Fill in the blank:
Thallium has an element symbol of _____, Mass number of _____, and atomic number of 81.
Symbol: Ti
Mass Number: 204
Atomic Number: 81
400
DOUBLE JEOPARDY:
Which elements are commonly found in solutions that indicate it is an acid or a base? Give an example of a base.
Solutions with H+ are acids and solutions with OH are bases.
500
How many electrons does a Oxygen have in their inner most energy level and their second energy level? What element will Oxygen need to bond to complete their second energy level?
Innermost energy level has 2 electrons, second energy level has 6. To complete the level, carbon needs to bond with 2 hydrogen atoms.
500
What type of gas is CH4?
Methane gas
500
Find the number of protons, neutrons, and electrons for the element Sg.