1... The smallest particle into which an element can be divided and still have the properties of
that element is called
atom
B.electron
neutron
mucieus
The nucleus of an atom contains
A. neutrons and electrons
protons and neutrons
C.
D.
protons and electrons
protons, neutrons and electrons
B
3.
The negatively charged particle of an atom is
A.
electron
B.neutron C.nucleus
D.
proton
4.
D.nucleus
Collectively, the protons and neutrons are called
A.isotopes
B.nuclear
C.nucleons
5.
C.Mercury
D. Nitrogen
Hg is the symbol of
A. Helium
B.Hydrogen
3
hydrogen
1.008
6. Based on the data above, the letter H is hydrogen's
A.atomic mass B. atomic number C. chemical symbol. element name
For number 7. refer to this table below.
Subatomic particle
Mass, grams
Electrons
9.109 x 10-25
Protons
1.672 x 10-24
Neutrons
1.675 x 10-24
7. Which
subatomic particle is the lightest?
A.electrons
B.neutrons
C.nucleus
D.protons
8. Fluorine's atomic number is 9. This means that a Fluorine atom has
A. a total of 9 neutrons and electrons
B.
a total of 9 protons and electrons
C.
9 neutrons in its nucleus
D. 9 protons in its nucleus
For number 9 to 10. consider the element shown in the notation below.
39
K
19
D. 58
9.
How many protons does one atom of this element contain?
19
20
39
C.
39
10. What is its mass number?
A.
B.
36