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Moles, concentration and acids and bases — Take-Home — 10th Grade Uses the mole as a counting unit, calculates concentration, and explains the pH scale. This one-page 10th Grade take-home carries the two-minute check that tells you whether the skill is wobbly, then "Count by Weighing" — 30 minutes with kitchen scales, rice or paperclips, red cabbage indicator,…
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Moles, concentration and acids and bases SCIENCE · 10TH GRADE Name Date TAKE-HOME PRACTICE Science · 10th Grade 30 minutes WHAT THIS BUILDS Uses the mole as a counting unit, calculates concentration, and explains the pH scale. 1 THE TWO-MINUTE CHECK ASK "How many moles in 36 g of water? How many times more acidic is pH 3 than pH 6?" A SOLID ANSWER 2 moles, and 1,000 times — knowing the scale is logarithmic. Not yet Getting there Solid 2 COUNT BY WEIGHING You need: Kitchen scales, Rice or paperclips, Red cabbage indicator, Household liquids Weigh 100 grains of rice, then use the mass to count a bag without counting — that's exactly the mole idea. Apply it: molar mass lets you count atoms by weighing. Calculate moles for three real substances from the kitchen. Make a red cabbage indicator and test household liquids, ranking them by colour. Dilute one tenfold, retest, and see the pH move by one — the logarithmic scale, demonstrated. SAY THIS WHEN IT STALLS "You counted the rice by weighing it. That's the whole idea of the mole — nothing more mysterious than that." Mole calculations from given molar masses. Stoichiometry: predict the mass of product from a given mass of reactant. IF IT'S TOO HARD IF IT'S TOO EASY Did it M T W T F Full year of take-homes: www.littleactivity.com/takehome/grade-10 www.littleactivity.com 10th Grade · Science
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Moles, concentration and acids and bases SCIENCE · 10TH GRADE Name Date TAKE-HOME PRACTICE Science · 10th Grade 30 minutes WHAT THIS BUILDS Uses the mole as a counting unit, calculates concentration, and explains the pH scale. 1 THE TWO-MINUTE CHECK ASK "How many moles in 36 g of water? How many times more acidic is pH 3 than pH 6?" A SOLID ANSWER 2 moles, and 1,000 times — knowing the scale is logarithmic. Not yet Getting there Solid 2 COUNT BY WEIGHING You need: Kitchen scales, Rice or paperclips, Red cabbage indicator, Household liquids Weigh 100 grains of rice, then use the mass to count a bag without counting — that's exactly the mole idea. Apply it: molar mass lets you count atoms by weighing. Calculate moles for three real substances from the kitchen. Make a red cabbage indicator and test household liquids, ranking them by colour. Dilute one tenfold, retest, and see the pH move by one — the logarithmic scale, demonstrated. SAY THIS WHEN IT STALLS "You counted the rice by weighing it. That's the whole idea of the mole — nothing more mysterious than that." Mole calculations from given molar masses. Stoichiometry: predict the mass of product from a given mass of reactant. IF IT'S TOO HARD IF IT'S TOO EASY Did it M T W T F Full year of take-homes: www.littleactivity.com/takehome/grade-10 www.littleactivity.com 10th Grade · Science
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Experiment — Plant a Seed SCIENCE · KINDERGARTEN Name Date Follow the steps to plant your own seed. Draw what happens! How to Plant a Seed 1 Fill a cup with soil. draw 2 Poke a small hole. draw 3 Drop in a seed. draw 4 Cover with soil. draw 5 Water gently. draw 6 Place in the sun. draw After one week, my plant looks like: draw www.littleactivity.com Kindergarten · Science
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