Elements Compounds Unit 1
Presentation
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Science
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7th Grade
•
Practice Problem
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Medium
+2
Standards-aligned
Ruth Long
Used 12+ times
FREE Resource
8 Slides • 10 Questions
1
2
Multiple Choice
Why is it important to understand the difference between elements and compounds in everyday life?
3
4
Multiple Choice
Which of the following is represented by a chemical symbol in the periodic table?
Element
Compound
Mixture
Molecule
5
6
Multiple Choice
Which of the following best describes the difference between an element and a compound?
An element is made of one type of atom, while a compound is made of two or more types of atoms.
An element is made of two or more types of atoms, while a compound is made of one type of atom.
Both elements and compounds are made of only one type of atom.
Elements and compounds have the same structure.
7
8
Multiple Select
Based on the models shown, which of the following are compounds?
The blue molecule with two atoms
The molecule with yellow and red atoms
The molecule with red and blue atoms
The molecule with three blue atoms
9
10
Multiple Choice
Explain how chemical formulas help chemists understand the composition of molecules.
11
12
Multiple Choice
In the chemical formula K2Cr2O7, how many atoms of oxygen are present?
2
7
9
3
13
14
Multiple Choice
Give two examples of elements and two examples of compounds that can be found in a kitchen, based on the image.
15
Multiple Choice
Table salt is a compound made of sodium and ___.
oxygen
carbon
hydrogen
16
17
Open Ended
Reflecting on today's lesson about elements and compounds, what is one question you still have or one thing you would like to learn more about?
18
Multiple Choice
What is the purpose of the periodic table in chemistry?
To organize elements based on their properties
To list all known compounds
To show chemical reactions
To display laboratory equipment
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