EOC Review - Goal 5

An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?
1. 29
2. 35
3. 64
4. 93
Which one of these scientists describeda model of the atom that included energy levels?
1. Dalton
2. Bohr
3. Newton
4. Thomson
1. Ethanol
2. Hexane
3. Methane
4. Methanol
1. 5 protons and 6 neutrons
2. 5 protons and 11 neutrons
3. 11 protons and 5 neutrons
4. 11 protons and 6 neutrons
1. Opal
2. Diamond
3. Garnet
4. Topaz
Which accounts for most of the mass of an atom?
1. electrons
2. protons
3. neutrons and protons
4. electrons and neutrons
Which describes an atom with an atomic number of 9?
1. 10 protons, 9 neutrons
2. 9 protons, 10 neutrons
3. protons, 5 neutrons
4. 3 protons, 3 neutrons
Which conclusion can be drawn from Rutherford’s gold foil experiment?
1. The atom has a small positive center.
2. The atom has a small negative center.
3. The atom has a large positive center.
4. The atom has a large negative center.
1. A
2. B
3. C
4. D
1. A
2. B
3. C
4. D
How many neutrons are in an atom of Pu-246?
1. 94
2. 150
3. 152
4. 246