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
The white balls in the model represent hydrogen atoms.
Which term describes the repeated arrangement of the same molecule?
Bonds
Extended structure
Molecular model
The term that describes the repeated arrangement of the same molecule is "extended structure."
Which statement about magnesium[Mg] and calcium [Ca] is correct?
They are both classified as noble gases.
They both have the same number of valence electrons.
They both have the same number of electron shells.
The correct statement is: They both have the same number of electron shells.
What type of molecular model is represented in the diagram below?
Lewis Dot Structure
Ball and stick
Space-fill
Without a diagram provided, I am unable to determine the type of molecular model represented. Could you provide more information or upload the diagram?
What property do elements in group 18 [or 8] most likely share?
They are silver in color
They are malleable
They have low or no reactivity