國小自然與生活科技翰林版三年級第二單元

在10毫升的水中加入8平匙的食鹽,可能會發現? What might you find if you add 8 level spoons of table salt to 10 ml of water?

• 水變黃water turns yellow

• 水結冰water freezes

• 水中有沉澱物
  There is sediment in the water

以下哪種物質可完全溶解在水中且能改變水的顏色?Which of the following substances is completely soluble in water and can change the color of water?

• 食鹽salt

• 特砂Special sugar

• 二砂B grade sugar

加入第6平匙砂糖後出現沉澱物,這表示水可以溶解幾平匙的糖?A precipitate appeared after adding the sixth level spoon of sugar. This means how many level spoons of sugar can be dissolved in water?

• 1

• 4

• 5

• 8

讀取量筒水量時,眼睛應該看水位的哪裡?When reading the water level in a graduated cylinder, where should your eyes look at the water level?

• 水位最高處
  highest water level

• 水位最低處
  lowest water level

所有物質都能溶解在水中?Can all substances dissolve in water?

• 對 O

• 錯 X

蛤蜊湯鹹鹹的,是因為裡面加了哪種物質? Clam soup is salty because of what kind of substance is added to it?

• 鹽Salt

• 糖granulated sugar

• 粗粒黑胡椒coarsely ground black pepper

以下哪一個是應用溶解的例子?Which of the following is an example of applying dissolution?

• 奶茶加珍珠Bubble milk tea

• 烤香腸grilled sausages

• 豆漿加砂糖
  Soy milk plus sugar

洗碗精溶解於水中,幫助我們將碗盤洗乾淨Dishwashing liquid dissolves in water and helps us clean dishes

• 對O

• 錯X

清潔劑去除馬桶中的污垢,是溶解的應用嗎? Is the detergent used to remove dirt from the toilet a dissolving application?

• 對 O

• 錯 X

砂糖在水中溶解的量和水的多少有關嗎? Is the amount of sugar dissolved in water related to the amount of water?

• 有關 related

• 無關 irrelevant