The smallest particle of an element that retains the chemical properties of that element.
What is an atom?
100
This number represents the number of protons in the nucleus of each atom of that element.
What is the atomic number?
100
The SI unit for temperature.
What is the Kelvin?
100
Anything that has mass and takes up space.
What is matter?
100
A testable statement.
What is a hypothesis?
200
J.J. Thomson discovered this negatively charged particle that has a mass of 1/2000 that of a hydrogen atom.
What is an electron?
200
This number represents the total number of protons and neutrons in the nucleus of a single atom of an isotope.
What is the mass number?
200
The liquid curve in a graduated cylinder that is read from the bottom.
What is the meniscus?
200
Depend on the amount of matter that is present such as volume and mass.
What is extensive properties?
200
In an experiment this variable is usually plotted on the x-axis of a graph.
What is the independent variable?
300
Ernest Rutherford discovered this structure by bombarding gold atoms with positively charged particles;most went through the atom, but some bounced back.
What is the nucleus?
300
Atoms of the same element that have different numbers of neutrons which causes their mass to become different.
What is an isotope?
300
The mass of a sample of material that has a volume of 55.1 ml and a density of 6.72 g/ml?
What is 370.g?
300
This relates to a substance's ability to undergo change that transform it into different substances, for example, flammability.
What is chemical property?
300
In an experiment, this variable is usually plotted on the y-axis of a graph.
What is the dependent variable?
400
This is the most recent model accepted by the scientific community.
What is the electron cloud model? or quantum model
400
This is the weighted average of the atomic masses of the naturally occurring isotopes of an element.
What is the average atomic mass?
400
This refers to the closeness of measurements to the correct or accepted value.
What is accuracy?
400
A type of change involving the souring of milk.
What is chemical change?
400
This is the standard for comparison in an experiment.
What is the control group?
500
James Chadwick discovered a neutral particle found in the nucleus.
What is a neutron?
500
An element that has 15 electrons.
What is phosphorus?
500
The units of density.
What is g/ml or g/cm3?
500
This has a fixed composition and differs from a mixture. An example would be NaCl.
What is a pure substance?
500
In an experiment, a substance that does not have any active ingredient in it and is usually made with sugar.