patulong naman po dine
ty




1. The nucleus of an atom is positive and its mass is almost the total mass of the atom
Itself. These hold true because the nucleus is made up of
a. protons
6. protons and neutrons
b. protons and electrons
d. electrons and neutrons
2. The atoms of a given element always have the same number of
2. isotopes
C. neutrons
b. nucleus
d. protons
3. Isotopes have the same number of
a. protons
c. protons and neutrons
b. electrons and neutrons
d. electrons and nucleons
4. The average mass of an atom can be determine using
a. a cathode ray tube
b. a gold foil apparatus
c. a mass spectrometer
d. an analytical balance
5. The Atomic theory was established by
a. Ernest Rutherford
C. John Dalton
b. Joseph Thompson
d. the Ancient Greeks​