Has a positive charge.
What is a proton?
The two regions of the atom.
What are nucleus and electron cloud?
The smallest unit of an element that retains all the characteristics of that element is called a(n)
The number of periods in the Periodic Table.
What is seven?
I tell the number of protons contained inside an atom of an element.
What is the atomic number?
All of the mass of an atom is concentrated here.
What is the nucleus?
Which of these are not a subatomic particle?
a. proton
b. ion
c. neutron
d. electron
What is an ion?
Electrons are in regions around the nucleus called energy levels. The first energy level
What is closest to the nucleus?
The building blocks of all the matter is called?
What is an atom?
We live in the nucleus of an atom.
What are protons and neutrons?
Which is found the farthest from the center of an atom?
What is an electron?
The atomic # of an atom is
What are the number of protons added to the number of neutrons?
Atoms with the same number of protons, but different number of neutrons.
What are isotopes?
The two particles that are always found in the same number.
What are protons and electrons.
The atomic number of oxygen, 8, indicates that there are eight
What are protons in the nucleus of an oxygen atom?
Information that is contained within a square on the Periodic Table.
What are atomic number, element symbol, element name, and atomic mass?
The nucleus of the atom is composed of?
What is protons & neutrons?
The _______________ of an element is the average mass of an element's naturally occurring atom
What is the atomic number?
Chlorine has an atomic number 17 and mass number 35. It has
a. 35 protons, 35 electrons, and 17 neutrons
b. 18 protons, 18, electrons, and 17 neutrons
c. 17 protons, 17 electrons, and 18 neutrons
What is C?
Electrons are in regions around the nucleus called energy levels. The first energy level is_____.
A. is furthest from the nucleus
B. Is closest to the nucleus
C. Holds the most electrons
D. Needs more than two electrons to fill it up
What is B?
Carbon atoms have 6 protons and 6 neutrons in the nucleus. They also ha
What is hydrogen?