Mississippi Science FB.2

FB.2 is a cluster heading. These are the individual standards under it.

• FB.2.1

  Develop and use simple atomic models to describe the components of elements (e.g., relative position, charges of protons, neutrons, and electrons).

• FB.2.2

  Obtain and use information about elements (e.g., chemical symbol, atomic number, atomic mass, and group or family) to describe the organization of the periodic ...

• FB.2.3

  Relate chemical reactivity to an element’s position on the periodic table. Use this information to determine what type of bond will form between elements (ionic...

• FB.2.4

  Analyze and interpret data to classify common solutions such as acids, bases, or neutral. Communicate the importance of pH in living systems.

• FB.2.5

  Investigate how the properties of water (e.g., cohesion, adhesion, heat capacity, solvent properties) contribute to the maintenance of living cells and organism...

• FB.2.6

  Explain the role of the major biomolecules (carbohydrates, proteins -including enzymes, lipids, and nucleic acids) to the survival of living organisms.

• FB.2.7

  Enrichment: Explore the structure of biomolecules using molecular models. Relate the structure of biomolecules to their function in living things (discuss types...

01

What Students Need to Do

Build atom models with protons and neutrons in the nucleus and electrons outside it. Use symbols, atomic numbers, masses, and groups to compare elements and predict ionic or covalent bonds. Use pH readings and water tests to explain conditions cells need, then describe the jobs of major biomolecules.

02

What Mastery Looks Like

Students draw atoms with labeled particle charges and use periodic table groups to explain why elements react. They connect hydrogen bonds to water's cohesion and adhesion, and explain how its heat capacity and solvent action help organisms. They classify pH readings and match carbohydrates, proteins, lipids, and nucleic acids to their jobs.

03

Common Misconceptions

Students may put electrons in the nucleus or confuse atomic number with atomic mass. Some think any bond involving hydrogen is a hydrogen bond. Others assume a neutral pH means a solution is safe or that enzymes work equally well at every pH.

04

How to Assess It

Exit ticket: Draw sodium and chlorine atoms with labeled particle charges, predict their bond using the periodic table, and classify solutions with pH values of 2, 7, and 10.

1. 01

   Drop water on wax paper, wick it up paper towels, and dissolve salt; record evidence of cohesion, adhesion, and solvent action.

2. 02

   Give students pH readings of 7.4 and 6.8; ask what a drop in blood pH might do to an enzyme.

3. 03

   Hand out sodium, chlorine, carbon, and oxygen element cards; pairs use periodic table groups to sort likely ionic and covalent pairs.

4. 04

   Put cups of water and sand under a lamp, record temperatures after ten minutes, and connect water's slower warming to lake habitats.

• PHS.1

  Students will demonstrate an understanding of the nature of matter.

• FB.3

  Students will demonstrate an understanding of how the structure of living organisms supports the essential functions of life.

• BIO.1A

  Students will demonstrate an understanding of the characteristics of life and biological organization.

• P.2.5

  Students will demonstrate an understanding of the properties of matter.