The Chemistry of Concrete
Written by Adi Ackerman, Head Teacher
"The Chemistry of Concrete" is written for 7th Grade (Ages 12-13), and it covers NGSS MS-PS1-3. A 6th grader who is already steady on matter can use it too, and an older student can use it as a short review.
2 pages in this set
7th grade science worksheet: follow a flow diagram from quarry to mixer and decide which steps are physical or chemical. Answer key included. Part of our physical and chemical changes matter collection. Aligned to NGSS standards.
How do I use this worksheet?
Start with the particle model sheet, then use the concrete reading for physical and chemical steps. Assign the equation writing sheet before the balancing sheet.
What students will practice
- Students will trace how limestone and clay become cement and concrete.
- Students will decide whether steps such as grinding and kiln heating are physical or chemical.
- Students will explain why concrete hardens and give a reason.
Curriculum Links
Next Generation Science Standards
Science · 7th Grade
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FAQ
How do I use this physical and chemical changes worksheet?
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Start with the particle model sheet, then use the concrete reading for physical and chemical steps. Assign the equation writing sheet before the balancing sheet.
What does this worksheet teach?
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Follow a flow diagram from quarry to mixer and decide which steps are physical or chemical. The directions on the page read: Read the text and study the flow diagram. Use them to answer the questions on page 2. An answer key is included.
Can I use this physical and chemical changes worksheet for homeschool or classroom?
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Yes, both. We made it for 7th grade matter, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
How can a particle model show a reaction?
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In a reaction, atoms join new partners, so the after box holds particles that were not there before. In a mixture, the same particles appear before and after.
What does it mean to balance an equation?
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A balanced equation has the same number of each kind of atom on both sides. Students change only the coefficients, then fill in a tally to prove the counts match.
Which real process do the sheets use for chemical change?
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One sheet follows concrete from limestone and clay through a kiln at about 1,450 degrees Celsius to the mixer. Students decide which steps are physical and which are chemical.
Do students write their own equations?
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Yes. They turn descriptions such as iron reacting with sulfur into equations with formulas and an arrow. They then name the reactants and products.
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