Syllabus/Classroom Expectations
Notebook checks are what percent of your grade?
5%
How many protons are in a neutral atom of Se?
34
How many neutrons are in bromine?
Neutrons=mass number-protons
=80-35
=45
How many electrons are in a neutral atom of He?
electrons=protons (in a neutral atom)
Protons=atomic number
2 electrons
Who sealed the honmoon?
HUNTR/X
How many protons are in a neutral atom of Ir?
77
How many neutrons are in As?
Neutrons= mass number-protons
=75-33
=42
How many electrons are in Si?
electrons=protons (in a neutral atom)
Protons=atomic number
14 electrons
Who's Spongebob's best friend?
Patrick
What are you allowed to use on quizzes?
Regular Chemistry: Your notebook
Honors Chemistry: an index card
Atomic number
How many neutrons are in mercury?
Mercury is Hg
Neutrons=mass number-protons
=201-80
=121
How many electrons are in a neutral atom of silver?
Silver is Ag
electrons=protons (in a neutral atom)
Protons=atomic number
47 electrons
What two subatomic particles make up mass number?
Protons and neutrons
How many neutrons are in potassium?
Potassium is K
neutrons=mass number-protons
=39-19
=20
A neutral atom of an element has a mass number of 226 and an atomic number of 88. How many electrons does it have?
88 electrons
atomic number=protons
In a neutral atom, protons=electrons
88 protons=88 electrons
How many times can you retake exams?
once
Potassium (K)
19 electrons in a neutral element means you have 19 protons
Protons=atomic number=identity of the element!
A neutral atom of an element has 28 protons and a mass number of 59. How many neutrons does it have?
neutrons=mass number-protons
=59-28
=31 neutrons
A neutral atom of an element has a mass number of 201 and an atomic number of 80. How many electrons does it have?
80 electrons
atomic number=protons
In a neutral atom, protons=electrons
80 protons=80 electrons
How many times has SpongeBob been the employee of the month consecutively?
374