_____ is an atom's central region, which is made up of protons and neutrons.

_____ is the number of protons in the nucleus of an atom. It is the same for all the atoms of an element.

______ States electrons will fill empty orbitals in the same type of orbital before pairing up.

_______ states that a chemical compound always contains the same elements in exactly the same proportions by weight or mass

Which of the following is the correct electron configuration for Calcium?

____ States that two electrons can not have the exact same set of quantum numbers.

_____ States that mass cannot be created nor destroyed in ordinary chemical and physical changes.

If an atom were the size of a football stadium, the nucleus would be the size of ____.

 ____ states electrils fill orbitals that have the lowest energy first.

If you have 2 moles of He, how many atoms of He do you have?

There are _______ different types of d orbitals.

The molar mass is the mass in ______ of 1 mole of any substance.

 There are _______ different types of f orbitals.

_______ are atoms that have the same number of protons as other atoms of the same element, but have different numbers of neutrons

_______ A region in an atom where there is a high probability of finding electrons.

_______ are subatomic particles that have a negative electric charge.

The standard use for defining the atomic mass unit is 1/12th of the _____ isotope.

___ discovered that each atom has a dense central region that he called the nucleus.

_____ states that when 2 elements combine to form two or more compounds, the mass of one element that combines with a given mass of the other is the ratio of small whole numbers.

 The SI unit to measure the amount of a substance is _____

Avagadro’s number is the number of atoms or molecules in 1 ______.

______ are the subatomic particle that has no charge and that is found in the nucleus of the atom.

 If you have 2.3456g of Pb, how many moles of Pb do you have? Pb has a molar mass of 207g.

 _______ are the subatomic particles that has a positive charge and that is found in the nucleus of the atom.

How many protons, neutrons, and electrons does a neutral Phosphorus-15 atom with an atomic number of 31 have?

The following are the 4 quantum numbers assigned to describe the position of electrons in an atom are except ______.

The SI unit for atomic mass is ____.

____ is the lowest energy state of an electron.

______ specify the properties of the electrons.

 ______ is the state in which an atom has more energy than it does normally

_______ discovered the electron, that it has negative charge, and has mass.

The first scientist to propose an Atomic Theory was _____.

______ includes all of the frequencies of wavelengths of electromagnetic radiation.

1. A(n) ______ is a substance that cannot be separated or broken down into simpler substances by chemical means. 

Which of the following is an element?

Which of the following is an example of a chemical property?

Which of the following is an example of a physical property?

Which of the following exists as a liquid at room temperature?

_____ is the quantity of matter contained in an object.

The particle in a _____ are rigid in structure and vibrate in place. 

What does the formula D=M/V calculate?

Two types of pure substances are elements and ____.

Which of the following materials exist as a solid at room temperature.

Which of the following is an example of a physical change?

Which of the following indicate a chemical reaction?

A(n) _____ is a substance made up of atoms of two or more different elements joinedby chemical bonds.

Which of the following is a natural chemical?

The particles in a ____ move randomly over large distances.

Which of the following is an example of a chemical change?

 ______ are the smallest unit of a substance that keeps all of the physical and chemical properties of that substance.

____ is defined as the force produced by gravity acting on the quantity of matter.

Which is a product in the following reactions:

          Limestone→lime+carbon dioxide

Which are the reactants in the following reaction:

         mercury(II)oxide →mercury+oxygen

What is 0℃ in Kelvin?

______ is a well-tested explanation of a natural phenomenon

A statement that makes a prediction of what will happen in an experiment is an ______

Nonzero digits like 3 are always ______.

Zeros in front of nonzero digits like 0.00034 are always _______

If a calculation has both addition/ subtraction and multiplication/ division, I should ______ after each operation.

When adding or subtracting numbers in scientific notation, the _____ need to be the same.

How close a measurement is to the true value is it’s ______.

_____ is a measure of the average kinetic energy of the particles in an object.

Zeros at the end of the number but to the left of the decimal point like 90 in our class are always _______.

______ is a well-tested observation of a natural phenomenon.

When multiplying numbers in scientific notation, _______ the exponents or when dividing numbers in scientific notation, _______ the exponents.

When heat is absorbed by a system from the environment it is considered a _______

When adding and subtracting, my answer can not contain any more ______ than the measurement with the least number of ______.

 Zeros at the end of the number and to the right of the decimal point like 450.000 are always ______.

When multiplying and dividing, my answer can not contain any more _____ than the measurement with the least number of _______.

What is 100 K in degrees Celsius?

Which temperature scale is used in chemistry?

The law that states that during any physical or chemical change, the total quantity of energy remains constant.

Which of the following is the energy transferred between objects that are different temperatures?

How close repeated measurements are to each other is it’s _______.