A positively charged subatomic particle found in the nucleus of an atom is
A negatively charged particle located outside the atom's nucleus is
A subatomic particle that has no charge and that is found in the nucleus of an atom is
A center of an atom is
An area around the center of the atom where electrons are located
Which part of an atom makes up most of its mass?
The smallest particle of an element that still retains the element's properties is
How many electrons are in the element in the picture?
What is the atomic mass of the element in the picture?
How many neutrons are in the element in the picture?
Given the atomic number 17, the mass number 36, how many neutrons does it have?
What is the atomic symbol of the element in the picture?
How many protons are in the element in the picture?
An element's ________________ is the same as the number of protons in the nucleus of its atoms.
Which determines the identity of an element?
Using the image, what is the atomic number?
Draw an atom model of the element in the picture. Label all subatomic particles, charges, and place them in the proper locations.
What part of an atom has a mass of 0?
What part of an atom has the mass of 1 amu? (more than one answer)
A proton has a charge of a -1.
The number of electrons in an atom of an element is the element's atomic number.
Adding the number of protons and neutrons in an atom results in the
The first energy level of an atom holds _____ electrons. The second energy level of an atoms holds ______ electrons. The third energy level holds ______ electrons. The fourth energy level holds _____ electrons.
Which symbol represents carbon?
The element beryllium (Be, atomic number 4 and atomic mass 9) is right above magnesium (Mg, atomic number 12 and atomic mass 24) in the periodic table. How many more electrons does magnesium have than beryllium?
Which is the correct symbol for the element sodium?