3330742
Questão 1
Questão
Negatively charged subatomic particles.
Responda
-
Proton
-
Neutron
-
Electron
-
Nucleus
Questão 2
Questão
Subatomic particle with no charge.
Responda
-
Proton
-
Neutron
-
Electron
-
Nucleus
Questão 3
Questão
Positively charged subatomic particle.
Responda
-
Proton
-
Neutron
-
Electron
-
Nucleus
Questão 4
Questão
Central dense core of an atom responsible for its mass.
Responda
-
Proton
-
Neutron
-
Electron
-
Nucleus
Questão 5
Questão
Philosopher who was among the first to suggest the existence of atoms.
Responda
-
Bohr
-
Rutherford
-
Dalton
-
Democritus
Questão 6
Questão
The mass of an electron is equal to the mass of a neutron.
Responda
- True
- False
Questão 7
Questão
Rutherford’s gold foil experiment proved that atoms are mostly empty space with a dense, positively charged nucleus.
Responda
- True
- False
Questão 8
Questão
The mass number of an atom is equal to
Responda
-
Weighted average of masses of all isotopes of an element
-
Protons plus Neutrons
-
Number of Neutrons
-
Number of Protons
Questão 9
Questão
The atomic mass of an atom is equal to
Responda
-
Weighted average of masses of all isotopes of an element
-
Protons plus Neutrons
-
Number of Neutrons
-
Number of Protons
Questão 10
Questão
An isotope of neon has a mass number of 22. How many neutrons in this isotope?
Responda
-
22
-
20
-
12
-
10
Questão 11
Questão
An isotope of lead has a mass number of 206. How many protons in this isotope?
Responda
-
82
-
124
Questão 12
Questão
Calculate the atomic mass of an atom with the following isotope data:
Mass : Abundance
36.00 : 75.77%
37.00 ; 24.23%
Responda
-
36.14
-
36.68
-
36.48
-
36.24
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