Selepas diaduk, bahan larut seperti garam tersebar sekata dalam air. Bahan itu tidak hilang tetapi membentuk larutan.
Langkah 1
Bahan larut tidak lagi kelihatan berasingan
Selepas diaduk, bahan larut seperti garam tersebar sekata dalam air. Bahan itu tidak hilang tetapi membentuk larutan.
Bahan larut = 可溶解的物质 盐放进水里搅一搅，就看不见一粒一粒的盐了。盐没有消失，而是均匀散开，和水变成溶液（larutan）。尝一口水是咸的，证明盐还在。例子：把糖放进热茶搅拌，糖粒不见了，但茶变甜。注意：看不见不等于不见了，盐还在水里。
Bahan larut = soluble substance After stirring, salt spreads evenly through the water and we cannot see the grains anymore. The salt has not disappeared; it has mixed with water to form a solution called larutan. The water tastes salty, which proves the salt is still there. Example: Sugar stirred into tea vanishes, but the tea tastes sweet. Watch out: Invisible does not mean gone; the salt is still in the water.
Langkah 2
Bahan tidak larut masih boleh diperhatikan
Beras atau kacang hijau tidak larut dalam air. Selepas diaduk, bahan itu masih kelihatan dan boleh mendap atau kekal sebagai ketulan.
beras + air + aduk → masih kelihatan
Bahan tidak larut = 不溶解的物质 米或绿豆放进水里搅拌后，还能清楚看见。它们会沉到杯底（mendap），或保持一块块的样子。因为它们不会和水混成溶液。例子：沙子放进水里搅拌，静置后沙子沉在底部。注意：水变浑浊一会儿，不代表它溶解了，要等一下再看。
Bahan tidak larut = insoluble substance Rice or green beans stirred in water can still be seen clearly. They sink to the bottom (mendap) or stay as separate lumps. They do not mix with the water to form a solution. Example: Stir sand into a cup of water and wait; the sand settles at the bottom. Watch out: Water may look cloudy for a moment, but that does not mean the material dissolved; wait and look again.
Langkah 3
Gunakan kuantiti dan cara mengaduk yang sama
Bandingkan bahan menggunakan isipadu air, kuantiti bahan dan tempoh mengaduk yang sama. Rekod sama ada bahan masih kelihatan.
air sama + bahan sama banyak + aduk sama
Kuantiti yang sama = 相同分量 比较两种物质时，水量、物质分量、搅拌时间都要一样。这样才是公平测试（ujian adil），结果才可靠。最后记录物质还看不看得见。例子：两杯各100 mℓ水，各放一茶匙盐和一茶匙沙，各搅30下。注意：如果一杯多搅几下，比较就不公平了。
Kuantiti yang sama = the same amount To compare two materials fairly, keep the water volume, the amount of material and the stirring time the same. This is a fair test (ujian adil), so the result can be trusted. Then record whether each material can still be seen. Example: Two cups of 100 mℓ water, one spoon of salt and one spoon of sand, 30 stirs each. Watch out: If one cup is stirred longer, the comparison is no longer fair.
Semak cepat · Soalan 1 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Garam tidak lagi kelihatan selepas diaduk. Garam itu...
Garam tidak lagi kelihatan = 盐看不见了 题目说盐搅拌后再也看不见了，问盐发生了什么。线索是“看不见”和“搅拌后”。想一想第1步：盐散开在水里的情形叫什么。可以尝一点点水来检查盐还在不在。例子：冰糖放进温水搅拌，慢慢看不见，水却变甜。注意：别以为看不见就是盐消失了。
Garam tidak lagi kelihatan = the salt can no longer be seen The question says salt cannot be seen after stirring and asks what happened to it. The clues are 'cannot be seen' and 'after stirring'. Think back to Step 1 and how salt spreads through water. You can check by tasting a tiny drop. Example: Rock sugar in warm water slowly vanishes, yet the water turns sweet. Watch out: Do not think the salt has disappeared just because it is invisible.
Semak cepat · Soalan 2 / 2
Cuba sendiri
Pilih jawapan. Jika belum tepat, baca petunjuk dan cuba lagi.
Beras masih kelihatan selepas diaduk. Beras itu...
Beras masih kelihatan = 米还看得见 题目说搅拌后米粒还看得见，问米属于哪一类。关键线索是“masih kelihatan”。回想第2步：哪些东西搅拌后会沉底或保持颗粒。也可以静置一分钟，看杯底有没有米粒来检查。例子：把小石子放进水里搅拌，石子一直看得见。注意：米泡久会变软，但米粒还在。
Beras masih kelihatan = the rice can still be seen This question tells us rice grains are still visible after stirring and asks which group rice belongs to. The key clue is 'masih kelihatan'. Recall Step 2 about things that sink or stay as grains. Let the cup rest for a minute and look at the bottom to check. Example: Pebbles stirred in water stay visible the whole time. Watch out: Soaked rice turns soft, but softness does not change what we observed.
Ringkasan
Syabas!
Kamu telah belajar tentang Bahan Larut dan Bahan Tidak Larut.
Ingat: bahan larut tidak lagi kelihatan berasingan; bahan tidak larut masih boleh diperhatikan; gunakan kuantiti dan cara mengaduk yang sama.
