Problem Analysis:
The worksheet is about understanding the concept of
compounds and distinguishing them from other types of substances (e.g., elements, mixtures). The key points to remember are:
1.
Compound: A compound is a pure substance composed of two or more different types of atoms chemically bonded together in a fixed ratio.
2.
Element: A substance made up of only one type of atom.
3.
Mixture: A combination of two or more substances that are not chemically bonded and can be separated by physical means.
The task involves analyzing the given diagrams (A, B, C, D, E, F) and identifying which ones represent compounds.
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Step-by-Step Solution:
#### Diagram Analysis:
Let us analyze each diagram based on the distribution of atoms:
1.
Diagram A:
- Contains two types of atoms (black and white circles).
- The atoms are mixed but not in a fixed ratio.
- This appears to be a
mixture because the atoms are not bonded in a consistent pattern.
2.
Diagram B:
- Contains two types of atoms (black and white circles).
- The atoms are arranged in a repeating pattern, suggesting they are bonded together in a fixed ratio.
- This represents a
compound because it shows a consistent arrangement of two different types of atoms.
3.
Diagram C:
- Contains only one type of atom (gray circles).
- All atoms are identical.
- This represents an
element because it consists of only one type of atom.
4.
Diagram D:
- Contains only one type of atom (black circles).
- All atoms are identical.
- This represents an
element because it consists of only one type of atom.
5.
Diagram E:
- Contains three types of atoms (black, white, and gray circles).
- The atoms are mixed but not in a fixed ratio.
- This appears to be a
mixture because the atoms are not bonded in a consistent pattern.
6.
Diagram F:
- Contains only one type of atom (black circles).
- All atoms are identical.
- This represents an
element because it consists of only one type of atom.
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Identification of Compounds:
From the analysis above:
-
Diagram B is the only one that shows a consistent pattern of two different types of atoms bonded together in a fixed ratio. This fits the definition of a
compound.
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Final Answer:
The diagram that represents a compound is:
\[
\boxed{B}
\]
Parent Tip: Review the logic above to help your child master the concept of element compound mixture worksheet.
