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?
The white balls in the model represent the hydrogen atoms in the molecule of ethanol.
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."
Use the periodic table to answer the question.
Which Statement about magnesium [Mg] and calcium [Ca] is correct?
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1 point
Captionless Image
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 about magnesium [Mg] and calcium [Ca] is that they both have the same number of electron shells.
What type of molecular model is represented in the diagram below?
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1 point
Captionless Image
Lewis Dot Structure
Ball and stick
Space-fill
Since there is no diagram provided, I am unable to determine the type of molecular model represented.
What property do elements in group 18 [or 8] most likely share?
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1 point
They are silver in color.
They are malleable.
They have low or no reactivity.
The property that elements in Group 18 or 8 most likely share is that they have low or no reactivity. These elements are commonly referred to as noble gases and are known for their stable and non-reactive nature.
In the ball-and-stick model of a molecule of ethanol, the white balls represent hydrogen atoms. Hydrogen is one of the elements that make up ethanol, along with carbon and oxygen.
To determine this, you can count the number of hydrogen atoms in ethanol, which is six. Each white ball in the model corresponds to one hydrogen atom. So, in this case, the six white balls represent the six hydrogen atoms present in ethanol.