Unlike accuracy, this term describes to the closeness of a set of measurements of the same quantity made in the same way.
What is precision?
100
The name for the dense center of an atom.
What is the nucleus?
100
The vertical columns of the periodic table.
What are groups?
100
The father of modern Atomic Theory.
Who is James Dalton?
100
Unlike mass, this unit measures the pull of gravity on an object.
What is weight?
200
A logical approach to solving problems by observing and collecting data, formulating hypotheses, testing hypotheses, and formulating theories that are supported by data.
What is the scientific method?
200
The number that is equal to the number of protons in the nucleus of an atom of that elements.
What is mass number?
200
An element that is a good conductor of heat and electricity is most likely this.
What is a metal?
200
This law tells us that matter and its mass cannot be created or destroyed in chemical reactions.
What is the law of conservation of mass?
200
The abbreviation for the measurement system that all chemists use, Le Systeme International d'Unites.
What is SI?
300
This New Zealand chemist devised an experiment that, using gold foil and alpha particles, confirmed the existence of the atomic nucleus.
Who is Ernest Rutherford?
300
This Greek philosopher first coined the word "atom".
Who is Democritus?
300
This unit is equivalent to the weights in grams of 1 mol of a substance.
What is the atomic mass unit?
300
This aspect of Dalton's atomic theory has been disproven.
What is the assertion that atoms cannot be created, destroyed, or subdivided?
300
The property that describes how massive objects are compared to their size: equal to mass divided by volume.
What is density?
400
The relationship between the temperature of a solvent and the amount of solute is can dissolve, when graphed, is called this.
What is the solubility curve?
400
The mass in grams of 2 mol N.
What is 28 grams?
400
This number is determined by the number of protons in the nucleus of an element.
What is the atomic number?
400
The number of this subatomic element in the nucleus is responsible for determining what isotope of an element we are discussing.
What is the neutron?
400
This unit of measurement refers to 6.022 x 10^23 atoms of a substance.
What is a mole?
500
Unlike molality, or mol/kg, this unit compares moles and liters, and is generally considered to be less reliable as a measurement.
What is molarity?
500
The number of atoms in a sample of 1.5 mol Na.
What is 9.03 * 10^23
500
The second isotope of hydrogen.
What is deuterium?
500
The weighted average of the atomic masses of all isotopes of an element.
What is average atomic mass?
500
There are this many moles of copper, Cu, in 3.22 g of copper.