When substances are formed that are different from the starting substances, a physical change has occurred. True False

2 answers:

4 0

False, because physical change does not involve the formation of substances. An example of physical change is change of state e.g water freezing .It is still water if you were to melt it.

Strike441 [17]3 years ago

3 0

Answer: The given statement is false.

Explanation:

Chemical change is defined as a change in which chemical composition and chemical properties of a substances changes.

For example: Rust formation on the iron.

Physical change is defined as a change in which form of the substance changes while chemical composition remains unchanged.

For example: Melting of an ice.

Here, new substance is formed which is different from the starting substance which means that a chemical change occurred.

You might be interested in

use the particle theory to explain why hot chocolate powder dissolves more rapidly in hot water than cold water

snow_lady [41]

Answer:

2) To dissolve, solvent particles must come in contact with solvent particles. Particles of hot water are moving much more rapidly than particles of cold water. Hence, in hot water more water particles will come in contact with hot chocolate powder than in cold water, resulting in faster dissolving.

Explanation:

6 0

3 years ago

I need this question ASAP please

Gre4nikov [31]

Answer:

Heeeeeeeeeeeeeloooooooooo

Explanation:

8 0

3 years ago

How much heat does it take to raise 100g of aluminum (c= .9 J/gC) from 12.5C to 31C?

zlopas [31]

Answer:

When two substances having different temperatures are introduced or kept together, heat energy, Q, flows from a substance at higher temperature to a substance at lower temperature. Also, heat continues to be transferred until their temperatures are equalized, at which point the substances are in thermal equilibrium. In a closed system, the amount of energy lost is equal to but opposite the amount of energy gained.

Explanation:

5 0

3 years ago

Convert 4.992×1010 g to each of the following units.<br> B. Mg<br> c. mg<br> D. metric tons

SVETLANKA909090 [29]

I think it is letter D

3 0

4 years ago

If 4.12 l of a 0.850 m-h3po4 solution is be diluted to a volume of 10.00 l, what is the concentration of the resulting solution?

statuscvo [17]

The process in which the concentration of the solution is lessened by the addition of water is said to be dilution and equation of dilution relates the initial concentration and volume of stock solution with the final concentration and volume of the solution.

Formula is given by:

$C_{1}V_{1}=C_{2}V_{2}$ (1)