1L - Chemistry Review Part 5 Question Preview (ID: 2760)
Grade 9 Locally Developed Science. Chemistry Review: Atoms.
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What is the charge of a proton?
a) positive
b) negative
c) neutral
d)
What is the charge of a electron?
a) positive
b) negative
c) neutral
d)
What is the charge of a neutron?
a) positive
b) negative
c) neutral
d)
Which of the following particles orbit around the nucleus?
a) proton
b) neutron
c) electron
d)
Which particles are inside the nucleus?
a) electrons and protons
b) protons and neutrons
c) neutrons and electrons
d)
The order for filling orbits with electrons is
a) 8, 8, 8
b) 2, 4, 6
c) 2, 8, 8
d)
Which of the following elements has a total of 3 electrons?
a) C; carbon
b) Ne; neon
c) Li; lithium
d)
Which of the following elements has a total of 6 protons?
a) C; carbon
b) Ne; neon
c) Li; lithium
d)
How many electrons can fit in the first orbit of a Bohr-Rutherford diagram?
a) 2
b) 4
c) 6
d)
The number of neutrons is found by using this formula
a) Number of electrons + Number of protons
b) Atomic number - Number of electrons
c) Atomic mass - Atomic number
d)
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