Atoms

All of the above

An element is a) A substance that cannot be made into a simpler form by ordinary chemical means. b) The smallest unit of a particular type of chemical. c) Identical to all atoms of the same element. d) All of the above

All of the above

An element is a) A substance that cannot be made into a simpler form by ordinary means b) The smallest unit of a chemical unit c) The atoms are identical d) All of the above

8

If the atomic number of an element is 6 and its mass number is 14, how many neutrons are contained in the nucleus? a. 6 c. 14 b. 20 d. 8

neutrons

Isotopes of the same element differ in the number of ____. a. protons c. neutrons b. electrons d. nuclei

Both a and b

Nucleus contains what particle(s). a) Neutron b) Proton c) Electron d) Both a and b

neutrons

Particles in atoms that do not carry an electrical charge are called a. neutrons b. nuclei c. protons d. ions.

nucleus

The central region of an atom is called the ____. a. proton c. nucleus b. electron d. Neutron

protons and neutrons

The mass number of an atom is obtained by totaling the number of ____. a. electrons and protons c. protons and neutrons b. electrons and neutrons d. neutrons and isotopes

Proton

This subatomic particle has a positive electrical charge. a) Neutron b) Nucleus c) Electron d) Proton

False

True or False An atomic mass is the number of protons plus the number of electrons. a) True b) False

False

True or False For an atom to have neutral charge it must have the same number of protons and neutrons. True False

true

True or False Isotopes of an element must have a given number of protons but may have a variety of numbers of neutrons. True False

False

True or false. Atomic mass are the number of protons plus the number of electrons. a) True b) False

Molecule

Two or more atoms linked up is called a: a) Solution b) Element c) Molecule d) Isotope