Physical properties are the properties in which there is no change in chemical composition of a substance. On the other hand, chemical properties are the properties which change the chemical composition of a substance.

For example, when water boils at $100 ^{o}C$ then it changes into vapor state whereas when water freezes at $0^{0}C$ then it changes state from liquid to solid.

This means only physical state of water is changing and there is no change in chemical composition of water.

Hence, we can conclude that best option describing given information is that these are the physical changes water undergoes.

4 0

3 years ago

Serena is mixing a material into a beaker filled with a liquid. She notices that the material seems to disappear into the liquid

Mandarinka [93]

the material is a solute

6 0

3 years ago

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A bat with a mass of 0.35 kg travels at a rate of 15 m/s. What is the animal's momentum?

Tanya [424]

Answer:

momentum= mass x velocity = 0.35x15= 5.25kgm/s

6 0

3 years ago

Convert 6.95×105 cal to joules. recall that 1 cal=duncan takes a break from studying and goes to the gym to swim laps. if swimmi

quester [9]

For this problem, let's use the approach of dimensional analysis. This technique is done by cancelling out like units that appear both on the numerator and the denominator side. As a result, this technique will let you know that your final answer conforms to what parameter is asked. In this case, the final answer should be in kJ. We use the conversion: 1000 cal = 4.184 kJ The solution is as follows:

<span>6.95×10</span>⁵<span> cal * 4.184 kJ/1000 cal = 2,907.88 kJ</span>

3 0

4 years ago