Question

1. the 3 particles of the atom are: a. __________ b. ________ c. ________ their respective charges are: a. ________ b. ________ c. ________ 2. the number of protons in one atom of an element determines the atom’s ________, and the number of electrons determines ________ of and element. 3. the atomic number tells you the number of ________ in one atom of an element. it also tells you the number of ________ in a neutral atom of that element. the atomic number gives the “identity “ of an element as well as its location on the periodic table. no two different elements will have the ________ atomic number. 4. the ________ of an element is the average mass of an element’s naturally occurring atom, or isotopes, taking into account the ________ of each isotope. 5. the ________ of an element is the total number of protons and neutrons in the ________ of the atom. 6. the mass number is used to calculate the number of ________ in one atom of an element. in order to calculate the number of neutrons you must subtract the ________ from the __________.

Explanation:

1. The three particles of an atom are protons, neutrons, and electrons. Protons have a positive charge, neutrons are neutral, and electrons have a negative charge.
2. The number of protons determines the atomic number and the identity of an element. The number of electrons determines the chemical properties of an element.
3. The atomic number is equal to the number of protons and in a neutral atom, also equal to the number of electrons. No two elements have the same atomic number.
4. The atomic mass of an element is the average mass considering the abundance of each isotope.
5. The mass - number is the total number of protons and neutrons in the nucleus of an atom.
6. To find the number of neutrons, subtract the atomic number from the mass number.

Answer:

1.
a. Protons
b. Neutrons
c. Electrons
a. Positive
b. Neutral
c. Negative

1. Atomic number; Chemical properties
2. Protons; Electrons; Same
3. Atomic mass; Abundance
4. Mass - number; Nucleus
5. Neutrons; Atomic number; Mass number