Chemistry Benchmark Q1

Which of the following is represented correctly?

Which of the following is not part of Dalton's atomic theory of matter?

A neutrally charged subatomic particle

If an atom has an atomic number of 50 and mass number of 125, how many subatomic particles?

All atoms are ...

The total number of protons and neutrons in an atom

The particles found in the nucleus of an atom are ...

Isotopes of the same element have different ...

The total number of protons in an atom

The weighted average of the masses of the isotopes of an element

The atomic number of an atom is ...

All atoms of the same element have the same number of ...

The scientist that determined the quantity of the charge of an electron.

How many neutrons does Lithium have?

The unit that is equivalent to 1/12 the mass of a carbon atom having 6 protons and 6 neutrons

What does the number 84 in the name krypton-84 represent?

Due to Rutherford, which model is believed to represent the atom?

Atoms with the same number of protons but a different number of neutrons

What is the relative mass of an electron?

The central part of an atom, containing protons and neutrons

A positively charged subatomic particle

The smallest particle of an element that retains the properties of that element

The scientist who first suggested the idea of the atom but was ignored of lack of sci. proof.

The sum of protons and neutrons in an atom is referred to as the ...