Density
What is the correct unit for Density?
g/mL
Isotopes of the same element all have the same number of ___________.
Protons.
Which of the following would be considered a nonmetal?
A) Potassium (K)
B) Aluminum (Al)
C) Hydrogen (H)
C) Hydrogen (H)
Which of the following is NOT found in the nucleus of an atom? Protons, Neutrons, or Electrons
Electrons
Which type of decay involves a neutron changing into a proton?
Beta Decay
What is the equation for solving for Mass?
Density x Volume
The number of ___________ is different between isotopes.
neutrons
In terms of its properties, what makes metalloids unique?
Have properties of both metals and nonmetals
True/False, if you have 4 particles in the nucleus, it must be Beryllium (Be).
False
During Alpha Decay, what element is used in the formula to signify a loss of 2 neutrons and 2 protons?
Helium (He)
Draw 2 boxes: A and B. Draw 3 dots in A. If Box B is twice as big but half the density, how many dots will it have?
3
Which options are considered isotopes?
A) 12 Neutrons, Mass Number 20
B) 12 Neutrons, Mass Number 24
C) 12 Protons, 12 Neutrons
D) 20 Protons, 12 Neutrons
None
"Dull, Brittle, Does NOT react with acid" are characteristics of ___________________.
nonmetals
Name an element that has 2 valence electrons
Be, Mg, Ca, Sr, Ba, Ra
Which type of nuclear energy process requires A LOT of energy and heat?
Nuclear Fission
An 42g object has a density of 3.54 g/mL. What is its volume? (MUST INCLUDE UNITS)
11.86mL
Sodium's average atomic mass 22.99. This means the most common isotope form of sodium has _____ neutrons and _____ protons.
12; 11
What is the difference between valence and core electrons?
Valence- In the Outer Shell Core- all other electrons within the outer shell
How many electron "spots" are available in the first three shells? (specify each level)
The atom bomb is an example of nuclear _________ and the hydrogen bomb is an example of nuclear _________.
fission; fusion
A pure sample of a material is measured to have a cuboid shape with side lengths of 1.65 cm, 1.10 cm, and 4.35 cm. It is determined to have a mass of 53.69 g. Determine the density of the material.
Density = 6.80 g/cm3
How many neutrons are in the most common form of Phosphorus?
16
Which element would behave the most similarly to Nitrogen?
Carbon, Phosphorus, or Oxygen
Phosphorus
3rd
What is the resulting isotope of an unstable 150Sm undergoing beta decay?
150Eu