What is the smallest part of an atom; protons and neutrons are composed of quarks
100
List three physical properties of water
What are melting point, boiling point, color, specific heat, neutral pH
100
Name four of the representative elements
What are ....
200
This is the definition of atomic number
What is the number of protons in an element's nucleus
200
The number of kilograms in 25 grams
What is 0.025 kilograms
200
The definition of valence electrons
What are the electrons in the outermost energy level of an atom
200
Four properties of metals
What is ductile, malleable, good conductors of heat and electricity
200
This is the definition, and an example of a polar molecule
What is a molecule with two separate (distinct) regions of opposite charge; H20
300
These are the only two elements that are liquid at room temperature
What are bromine and mercury
300
The number of mL in 10 kL
What is 10,000,000 mL
300
The definition and equation for density
What is the amount of matter in an object; density = mass/volume
300
Three properties of nonmetals
What is poor conductors of heat and electricity, brittle
300
These are the two elements that are exceptions to the octet rule
What are hydrogen and helium
400
The electron configuration of oxygen
What is 1s22s22p4
400
The number of meters in 20 centimeters
What is 0.20 meters
400
The definition of mass number
What is the total number of neutrons and protons in an atom's nucleus
400
A solution in which one substance is evenly distributed throughout the solution's medium
What is a colloid
400
The definition of an amorphous solid
What is a solid that has a range of melting points (like candles or butter)
500
The difference between a covalent and an ionic bond
What is covalent bonds share electrons, while the electrons in an ionic bond are taken
500
The number of kilometers in 2 millimeters
What is 0.000002 kilometers
500
The definition of an isotope
What is atoms with the same number of protons, but differing number of neutrons in the nucleus; isotopes are why average atomic masses are not whole numbers
500
What is the subatomic particle that determines the chemical reactivity of an atom, and why?
What is an electron; atoms want a full octet.
500
Determine the average atomic mass of copper, given that copper-63 has a relative abundance of 70% and copper-65 has a relative abundance of 30%