1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
S_A_V [24]
3 years ago
15

What are some natural processes that represent physical and chemical changes?

Chemistry
2 answers:
saveliy_v [14]3 years ago
7 0

A "natural" chemical change would be burning wood, cooking eggs, baking a cake and milk going sour. These changes can't be changed so therefore they are chemical changes.

A natural physical change would be mixing salt or sand with water, melting or boiling water, cutting wood, and shredding paper. The salt and sand can be removed from the water. Hot and cold water are still water. Wood and paper didn't change their composition. All of these examples are reversible.

KiRa [710]3 years ago
3 0

Answer:

Chemical change:

  • Rusting of a metal iron
  • Food contamination
  • Seed germination

Physical change:

  • Melting of ice
  • Boiling of water
  • Rock weathering

Explanation:

The difference chemical and physical change is physical change is the change of form, such as change in shape, and chemical change is the change of chemical bonds.

You might be interested in
Which wind blows cool air toward the sea at night ?
alexira [117]

Answer:

Land breeze is the wind that blows cool air from land towards sea at night.

Explanation:

Land breeze is a type of wind which is cool and blows towards sea. It occurs due to the difference in the temperature of water and land. At night, the lands cool quickly due to the removal of heat from it. So the air that is present on land is cool down and this air moves towards sea. So this breez is called land breeze because it moves from land.

6 0
3 years ago
Read 2 more answers
4. Can 200 ml of fluid be transferred to a 1-quart container? Explain the process that you used to arrive at your answer.
sukhopar [10]

Answer:

  • <u><em>Yes, 200 ml of fluid can be transferred to a 1-quart container.</em></u>

Explanation:

You must compare the two volumes, 200 ml and 1 quart. If 200 ml is less than or equal to 1 quart, then 200 ml of fluid can be transferred to a 1-quart container, else it is not possible.

To compare, the two volumes must be on the same system of units.

Quarts is a measure of volume equivalent to 1/4 of gallon.

One gallon is approximately 3.785 liters.

3.785 liter = 3.785 liter × 1,000 ml/liter

Then, to convert 1 quart to ml use the unit cancellation method:

  • (1/4)gallon × 3.785 liter/gallon × 1,000ml / liter = 946.25 ml

Thus, you get that a 1-quart container has volume of 946.25 ml, which allows that 200ml of fluid be transferred to it.

7 0
3 years ago
A precipitate forms when mixing solutions of sodium fluoride (NaF) and lead II nitrate (Pb(NO3)2). Complete and balance the net
Leya [2.2K]

Answer:

See explanation

Explanation:

The molecular equation shows all the compounds involved in the reaction.

The molecular equation is as follows;

2NaF(aq) + Pb(NO3)2(aq) -------> PbF2(s) + 2NaNO3(aq)

The complete ionic equation shows all the ions involved in the reaction

The complete ionic equation;

2Na^+(aq) + 2F^-(aq) + Pb^2+(aq) + 2NO3^-(aq) -------->PbF(s) + 2Na^+(aq) +2NO3^-(aq)

The net Ionic equation shows the ions that actually participated in the reaction

The net ionic equation is;

2F^-(aq) + Pb^2+(aq)--------> PbF(s)

3 0
2 years ago
What mass of gallium oxide, Ga₂O3, can be prepared from
Degger [83]

Answer:

(70 x 2 + 16 x 3) x 29/70 x 2 = 38,9428571 g.

Explanation:

7 0
2 years ago
A measure of the extra charges that are on an object is called
SashulF [63]
Charge is the measure of extra positive or negative particles an object has
8 0
3 years ago
Other questions:
  • After Frank Palko was sentenced to death by the state of Connecticut, the Supreme Court ruled that
    15·2 answers
  • Which reaction illustrates the conservation of matter during a redox reaction
    10·1 answer
  • what are the similarities and differences between the gas properties and kinetic molecular theory postulates?
    13·1 answer
  • Why do metals bend?
    9·2 answers
  • Which statement describes the transfer of heat energy that occurs when an ice cube is added to an insulated container with 100 m
    7·1 answer
  • Four seasons is a characteristic of the _____.
    5·1 answer
  • The yearly amounts of carbon emissions from cars in Belgium are normally distributed with a mean of 13.9 gigagrams per year and
    10·1 answer
  • What volume will a sample of F2 gas occupy in a syringe at 5.5 atm if the f2 has volume of 30 ml at 1.2 atm?
    11·1 answer
  • If a seed grows well in a very salty environment then that seed has a high salt tolerance.
    11·2 answers
  • Describe a simple experiment that can be perfomed in tha laboratory to demonstrate the formation of iron3chloride from iron fill
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!