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An element has 27 protons, 27 electrons, and 32 neutrons. What is the atomic mass?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
How can you calculate the atomic mass of an element?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
In a neutral Calcium atom, there are 20 protons, 20 neutrons, and 20 electrons. If the Calcium atom loses two electrons, what will be the charge of the Calcium atom?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
Groups of students built models of atoms using macaroni to represent protons, beans to represent neutrons, and marshmallows to represent electrons. How can the model be improved to be more accurate of the actual size of each subatomic particle
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
Which statement best describes the nucleus of the atom?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
A student is given a diagram of an atom with 3 protons and 3 electrons. Which statement describes the atom if another electron is added to the diagram?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
Which subatomic particle is attracted to the nucleus?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
If an atom has 12 protons, 13 neutrons, and 12 electrons, what is the charge of the atom?
0
Use rice grains to represent the electrons in the model
59
It is centrally located and contains almost all of the atomic mass and has an overall positive charge.
The atomic number will stay the same and the atom will become negatively charged.
+2
Add the protons and neutrons
electron
Check it!