Scientists and discoveries
Bonds and Naming
Sig Figs and rounding
Subatomic particles
Electrons
100
Bohr Model
100
Electrons are shared in this type of bond.
Covalent
100
How many sig figs does the following measurement have:
4,007 ml
4
100
What charge do protons have?
positive
100
S orbitals have what kind of shape?
Spherical (circular)
200
What did Mendeleev do?
Periodic Table organization
200
This bond is between a metal and a nonmetal.
Ionic bond
200
~~~DOUBLE POINTS!!!~~~
Are the following measurements more ACCURATE or PRECISE when compared to the measurement of 100.0 degrees.
Measurements: 77.4, 78.9, 77.1 degrees
PRECISE.
200
Name all 3 subatomic particles.
Protons
Neutrons
Electrons
200
How many electrons does F have?
9
300
Name at least 1 of the 3 steps in the scientific method.
1) Making observations 2) Proposing and testing hypotheses 3) Developing theories
300
This bond is between a nonmetal and a nonmetal.
Covalent bond
300
Write the following number in scientific notation:
6,300,000
6.3 x 10^6
300
How many neutrons does C have?
6
300
What is the distance between two crests called?
Wavelength
400
What scientist was the first to prove the existence of an atom?
Dalton
400
Give the correct name for C4O7.
Tetracarbon Heptoxide
400
How many sig figs does the following measurement have:
0.9800460
7 (the zero on the right counts because there's a decimal!)
400
What is the atomic number of neon (Ne)?
10
400
How many valence electrons does Ne have?
8
500
Rutherford's Model, or Gold Foil Experiment
500
Give the correct formula for Dinitrogen trioxide.
N2O3
500
Round 65.145 meters to 4 significant figures.
65.15 meters
500
What early model of the atom did Thomson develop that involved a lump of positive charge with electrons stuck to it?
Plum-Pudding Model
500
What is the charge for Na ion?
+1