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4 years ago

Choose all the answers that apply. Which of the following are physical changes? rusting souring melting boiling freezing

Chemistry

2 answers:

yanalaym [24]4 years ago

6 0

Melting point, boiling point

Dvinal [7]4 years ago

5 0

What are the 5 types of physical changes?

Types of physical changes include boiling, clouding, dissolution, freezing, freeze-drying, frost, liquefaction, melting, smoke and vaporization.

Boiling Liquids. ...

Clouding and Condensation. ...

Dissolution or Dissolving. ...

Freezing or Solidification. ...

Freeze-drying . ...

Frost Formation. ...

Liquefaction Changes.

Types of physical changes include boiling, clouding, dissolution, freezing, freeze-drying, frost, liquefaction, melting, smoke and vaporization.

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Softa [21]

Answer:

5 , I think. sorry if its wrong

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3 years ago

Which of the following compounds contains both ionic and covalent bonds? KOH N2O5 CH3OH Na2O

dusya [7]

Answer: a.KOH

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Explanation:

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3 years ago

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jeyben [28]

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7 0

3 years ago

A 1.50-kilogram ball is attached to the end of a 0.520-meter string and swung in a circle. The velocity of the ball is 9.78 m/s.

Sedaia [141]

Answer:

F centripetal force (tension) = 275.9 N

Explanation:

Given data:

Mass = 1.50 kg

Radius = 0.520 m

Velocity of ball = 9.78 m/s

Tension = ?

Solution:

F centripetal force (tension) = m.v² / R

F centripetal force (tension) = 1.50 kg . (9.78 m/s)² / 0.520 m

F centripetal force (tension) = 1.50 kg . 95.65 m²/s² / 0.520 m

F centripetal force (tension) = 143.5 kg. m²/s² / 0.520 m

F centripetal force (tension) = 275.9 N

7 0

3 years ago

Classify each of the following as a pure substance or a mixture. If a mixture, indicate whether it is homogeneous or heterogeneo

Mashutka [201]

Answer:

a) Heterogeneous mixture (b) Homogenous mixture (c) Pure substance (d) Pure substance

Explanation:

Homogenous mixtures contains mixture of substances with similar proportions while Heterogenous mixture contains substances with a varying proportion.

8 0

3 years ago