Mississippi Science P.5.5A.1

Science5th GradePhysical Science

The Standard

P.5.5A: Students will demonstrate an understanding of the physical properties of matter.

Obtain and evaluate scientific information to describe basic physical properties of atoms and molecules.

2026 Mississippi College- and Career-Readiness Standards for Science · Organization of Matter and Chemical Interactions

Teacher's field guide

What Students Need to Do: Students use diagrams and short science texts to describe atoms as tiny particles with mass and molecules as bonded groups of atoms. They check labels and sources before trusting claims about a particle’s size, shape, or makeup.
What Mastery Looks Like: A student can use a labeled model to identify the two hydrogen atoms and one oxygen atom in a water molecule. They can explain that the model’s colors and ball sizes do not show what the atoms really look like.
Common Misconceptions: Students may think a molecule is a single atom or that every molecule contains different kinds of atoms. They may think a water molecule is a tiny liquid drop, or that atoms have the colors shown in models.
How to Assess It: Display a labeled textbook diagram of H₂O and an uncredited cartoon of a blue drop. Ask students which better shows the atoms in one water molecule, what those atoms are, and one way the picture could mislead them.

Lesson moves

Give pairs red and white clay balls and toothpicks to build H₂O and O₂ from model cards, then count atoms and compare shapes.
Show a labeled molecule diagram and a blue water-drop cartoon; ask which better shows a molecule’s parts and what each picture leaves out.
Deal cards showing H, O, H₂, and H₂O; have partners sort atoms from molecules and explain each choice.
Point to the word water on a bottle label; have students sketch one H₂O molecule and explain why the bottle holds many molecules.

Free download

A ready-to-print activity worksheet aligned to P.5.5A.1, with an answer key for the teacher on its own page. No account needed.

PDF, US Letter, prints cleanly in black and white.

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