Scientific Method
This statement is testable and predicts an outcome based on data.
What is a hypothesis?
This is the SI base unit for temperature.
What is Kelvin?
This particle has a positive charge and is found in the nucleus of an atom.
What is a proton?
This law states that matter is not created or destroyed in chemical reactions.
What is the law of conservation of mass?
The number of protons in an atom determines this atomic characteristic.
What is atomic number?
The method for testing hypotheses requires controlling variables in an experiment.
What is experimentation?
This is the quantity measured in meters, kilometers, or centimeters.
What is length?
This term refers to atoms of the same element with different masses due to varying numbers of neutrons.
What are isotopes?
This law states that a compound always contains the same elements in the same proportion by mass.
What is the law of definite proportions?
This is the total number of protons and neutrons in the nucleus of an atom.
What is mass number?
A logical approach that involves making measurements and collecting data.
What is observation?
The SI base unit for the amount of substance, commonly used in chemistry.
What is the mole?
This experiment led to the discovery of the nucleus after some alpha particles were deflected.
What is Rutherford's gold foil experiment?
This law describes how two elements can combine to form different compounds in small whole-number ratios. (e.g. CO, CO2)
What is the law of multiple proportions?
This is the average mass of atoms of an element, taking into account isotopes.
What is average atomic mass?
When multiple scientists verify a hypothesis through repeated testing, this occurs.
What is replication?
What is centi-?
The particle discovered by JJ Thompson in 1897 through cathode-ray experiments.
What is the electron?
According to this theory, only whole numbers of atoms can combine to form compounds.
What is Dalton’s atomic theory?
This number, 6.022 × 10²³, represents the number of atoms or molecules in one mole of a substance.
What is Avogadro’s number?
A broad generalization that explains facts and phenomena in science.
What is a theory?
The SI unit for volume, equivalent to 1000 cm3.
What is a liter?
The attraction that holds protons and neutrons together in the nucleus.
What are nuclear forces?
This Greek philosopher said all matter is made up of basic particles, atoms, which are indivisible.
Who is Democritus?
A general term for a specific isotope of an element.
What is a nuclide?