GROWTH DEVELOPMENT CHILD
SUMMATIVE ASSESSMENT
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When water molecules stick to each other
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When water molecules form a water drop
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When water molecules evaporate
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When water molecules stick to other substances.
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Detailed explanation-1: -This is because the water molecules are attracted to the charged glass walls of the capillary more than they are to each other and therefore adhere to it. This type of adhesion is called capillary action.
Detailed explanation-2: -Cohesion: Water is attracted to water, and Adhesion: Water is attracted to other substances.
Detailed explanation-3: -Adhesion refers to the tendency of water molecules to be attracted, or ‘’stick”, to other substances. This is a result of the covalent bond between the two hydrogen atoms and the one oxygen atom in the water molecule.
Detailed explanation-4: -Water Experiments in Space Water is very adhesive; it sticks well to a variety of different substances. Water sticks to other things for the same reason it sticks to itself – because it is polar so it is attracted to substances that have charges.