6.6 Water

Because of water's structure, many substances will dissolve in it. This is why water is often called the ​ (a)   .

• universal solvent
• dissolver
• most important

Tags

NGSS.MS-ESS2-4

Match the definition with the property of water

Groups:

(a) Cohesion

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(b) Adhesion

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(c) Surface Tension

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(d) Density

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Click on the sentence that means water has a "high specific heat".

Tags

NGSS.MS-PS1-4

Categorize the examples by either Physical or Chemical weathering.

Groups:

(a) Physical Weathering

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(b) Chemical Weathering

• gravity

• rust

• acid rain

• wind

• freezing and expanding water

Which model best represents a molecule of water?

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Tags

NGSS.MS-PS1-1

On Earth, the compound that naturally exists in all three states of matter is –

• CO₂

• H₂O

• C₆H₁₂O₆

• NO₂

Tags

NGSS.MS-PS1-4

Water freezes at what temperature on the Celsius scale?

• 0°C

• 32°C

• 100°C

• 212°C

What property is shown when water molecules on the surface of water pull on one another and draw closer together?

• Gravity

• Density

• Surface tension

• Capillary action

Which are unique properties of water?

• Solid water floats when placed in liquid water.

• Water heats up and cools rapidly.

• Water molecules show cohesion and stick to one another.

• Earth is known as the Blue Planet due to the scattered sunlight in Earth's atmosphere.

A student planned an investigation to test the surface tension of tap water using the materials shown. The student filled three bowls with different liquids and floated a napkin in each bowl. The student then put a needle on the napkin. What was the independent variable in the investigation?

• Number of bowls

• Type of liquids

• Size of napkin

• Brand of needle

Tags

NGSS.MS-PS1-2