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AlexFokin [52]
3 years ago
12

Conclusion: How did your observations support or contradict your predictions? Describe an

Biology
1 answer:
harina [27]3 years ago
3 0

Answer:The Law of Conservation of Mass states that mass is conserved in physical and chemical changes. Students explore this concept by taking initial masses, making predictions, and finding final masses of physical and chemical changes. Students observe water changing from ice to a liquid, a piece of cardboard being cut up, salt dissolving in water, Alka-Seltzer reacting in water, and water's physical property of cohesiveness being disrupted by soap.

Explanation:

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Freezing temperatures
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4. What is meant by the fact that water is a "polar" molecule?
Ksju [112]

Hello!

A polar molecule is where one of the atoms in a molecule has a slight positive charge, and another has a slight negative charge, due to the unequal sharing of electrons.

Water is one of these molecules - the electrons spend more time around the oxygen atom in the center, and less around the hydrogens, so the hydrogen atoms have a slight positive charge, and the oxygen a slight negative.

Therefore, your answer is B, water has a slight negative and a slight positive charge at opposite poles.

Hope this helps!

3 0
3 years ago
Cellular respiration converts the energy of fuel molecules to a form of energy that a cell can use to perform work. In an averag
bagirrra123 [75]

Answer:

A) potential energy called chemical energy.

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3 years ago
Suppose the Moon rotated on its axis just as quickly as Earth. Would we still always see the same side of the Moon from Earth? E
Snezhnost [94]

Answer:

Yes

Explanation:

Yes we would because the moon is spinning just as fast as earth, so we would see the same side.

8 0
3 years ago
Troy heads a large-scale farm that specializes in cattle. Which title best describes Troy’s position?
Margaret [11]

Answer:

farm hand

Explanation:

because the farm only specializes in cattle

5 0
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