Moritz is watching his little brother play in a mud puddle. moritz notices that when his brother stirs it with a stick, after a few moments the dirt settles back to the bottom of the puddle. his brother is creating a
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anjali knows that whole milk has more fat than skim milk. however, the solid fat doesn’t seem to separate from the liquid milk even after it has been in the fridge for a few days. this is evidence that milk is a
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the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.