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- Grade Range
- 7th - 9th
- Rating
Students perform experiments designed to show that ions are present in titration, acids and bases are electrolytes, no ions are present at the end of titration, and electrical conductivity depends on the presence of ions in a solution. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students determine the number of valence electrons using energy level diagrams, then explain why elements lose or gain electrons during ionic bonding. They define an ion, write correct ion notation, and describe some properties of ionic compounds. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students find the relationship between the variables based on experimental data. They determine mathematical relationship between pH and the amount of hydrogen Ions in solution. Full Review »
- Grade Range
- 9th - Higher Ed
- Rating
Students explore protein purification by separating a positively charged molecule, lysozyme, from a negatively charged molecule, albumin, at neutral pH using ion exchange chromatography. Full Review »
- Grade Range
- 8th - 9th
- Rating
Students participate in a laboratory investigation in which they observe the effect of temperature and pH on enzyme activity. Students also examine exposure to heavy metal ions and the effect that may have on enzyme activity. Full Review »
- Grade Range
- 9th
- Rating
Students review atomic structure using two-color counters (plastic disks that are red on one side and yellow on the other) to represent positive and negative charges in the formation of ions. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students investigate and identify properties of ionic and covalent compounds. They conduct tests to determine the presence of ions in solutions. Students indicate substance state symbols ( s, l, g, aq ) in chemical equations. Full Review »
- Grade Range
- 10th - 12th
- Rating
Students prepare single strands of muscle cell. They microscopically examine muscle cells and identify bands of darker and lighter proteins. They predict, observe, describe and quantify the effects of ions and ATP. Full Review »
- Grade Range
- 11th - 12th
- Rating
Student perform an experiment in which they determine the velocity of ion flow in an electrotonic potential and compare it to the velocity of action potentials. They record and analyze their results. Full Review »
- Grade Range
- 9th - 12th
- Rating
Students rank elements from groups 1,2,17 and 18 according to reactivity. They determine the charge of ions and labels as cations or anions. Students discuss how an atom can be happy or unhappy depending on the number of valence electrons. They complete an "Ion Ions" crossword puzzle. Full Review »
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