What does the atomic number tell us about an atom?
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The atomic number tells us how many protons and neutrons are in an atom or element
The atomic number tells us how many protons and electrons are in an atom or element
The atomic number tells us the mass of the atom or element
The correct answer is: The atomic number tells us how many protons and electrons are in an atom or element.
How many electrons can be in the FIRST energy level of any atom or element?
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4
8
2
2
What particles are located within the nucleus of an atom?
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protons and electrons
protons and neutrons
electrons and neutrons
protons and neutrons
How do we find the number of neutrons in an atom?
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Add the atomic number and mass number together
Subtract the number of electrons from the number of protons
Subtract the number of protons from the mass number
The correct answer is: Subtract the number of protons from the mass number
Which of the following does the atomic number of an atom or element represent?
The number of protons in the atom
The number of neutrons in the atom
The number of particles in the nucleus of the atom
The atomic number represents the number of protons in the atom.
A molecule of ethanol has two carbon atoms, six hydrogen atoms, and one oxygen atom. A ball-and-stick model of a molecule of ethanol is made from the following components:
one red ball
two black balls
six white balls
eight sticks
What do the white balls in this model represent?
Carbon atoms
Bonds between atoms
Hydrogen atoms