11. Instructions: Fill in the blanks using the word bank below. Write the letter that corresponds
the term in the blank. For example, if you want to use "matter", simply write letter "D"
According to Greek philosoper,1)_______,2)_______is made of up of tiny particles called 3)_______. Atom composed of proton,neutron, and electron. The proton is 4)_______ charged body. It is found in the atom's 5)_______together with the neutron. A neutron has no electrical charged. A particle of 6)_______ electric charges. An electron is a 7)_______ charge body found to be spinning outside the nucleus. The 8)_______ of an element is equal to the number of protons or number of 9)_______ of a neutral element. 10)_______ is equal to the sum of the number of protons and neutrons of the atom.
A. Atomic mass number
B. Atomic number
C. Democritus
D. Matter
E. Atom
F. Positively
G. Negatively
H. Nucleus
I. Electrons
J. Zero
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