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
AfilCa [17]
2 years ago
5

Need helpppppppppppppppppp

Chemistry
2 answers:
kobusy [5.1K]2 years ago
4 0

Your answer is, all of the above.

<u>Chemical Change </u>

A chemical change occurs on the molecular level and produces a new substance. However, a physical change rearranges molecules and does not produce a new substance.

                    <u>10 examples of chemical changes</u>

  • Burning of paper and log of wood
  • Digestion of food
  • Boiling an egg
  • Chemical battery usage
  • Electroplating a metal
  • Baking a cake
  • Milk going sour
  • Various metabolic reactions that take place in the cells
  • Rotting of fruits
  • Decomposition of waste

                      <u> Impacts of Chemical changes</u>

Anytime a new substance is made, a chemical change takes place. Usually two or more materials are combined and a new substance is formed. A chemical change can produce amazing explosions, like fireworks.

Thus, <u>all of the above</u> is the correct answer. Learn more about "Chemical Changes" here

brainly.com/question/24547616

nadezda [96]2 years ago
3 0

Answer:

none of the above

Explanation:

deposition (gas to solid), sublimation (solid to gas), evaporation, this all is physical change not chemical change

You might be interested in
Why is it not correct/precise to say "a molecule of salt?"
Fynjy0 [20]

It is not correct to say " a molecule of salt " because salt is a compound.

Explanation:

  • As we know a molecular bond is present in each molecule.
  • Salt (NaCl) is considered as a compound because it is made up of two types of elements that are sodium as well as chlorine.
  • On the other hand it is not considered as a molecule as it is not holding an ionic bond.
  • As a result we can name it as an ionic compound. Hence it is not considered as a molecule of salt.
4 0
3 years ago
How many gallons of gasoline that is 5% ethanol must be added to 2,000 gallons of gasoline with no ethanol to get a mixture that
Amanda [17]

Answer:

V_1= 3000 gal

Explanation:

We have 3 solutions:

  • Solution 1 (with ethanol)
  • Solution 2 (no ethanol)
  • Final solution

V_f=V_1 + V_2

and for the ethanol:

V_f*0.03=V_1*0.05 + V_2*0

V_f=V_1 \frac{5}{3}

Combining:

V_1 \frac{5}{3}=V_1 + V_2

V_1 \frac{2}{3}= V_2

V_1= \frac{3}{2} V_2

If V2=2000 gal:

V_1= \frac{3}{2} 2000 gal

V_1= 3000 gal

8 0
3 years ago
Which best represents the law of conservation of mass?
makkiz [27]
Mass of reactants &gt mass of products
6 0
3 years ago
Read 2 more answers
In 450 BCE, Greek philosopher Democritus first thought of the existence
trasher [3.6K]

Answer:

A. Invisible

Explanation:

3 0
3 years ago
True or false. test tubes, spot and/or well plate will be used to combine substances in bottles and form a reaction. group of an
tresset_1 [31]

Test tubes, spot and/or well plate will be used to combine substances in bottles and form a reaction is referred to a true statement.

<h3>What is a Chemical reaction?</h3>

This is the reaction which involves substances known as reactants combining new substances which are referred to as products. This is usually done in the laboratory and equipment and tools such as test tubes, thermometer etc are used.

Test tubes, spot and/or well plate are often used to combine substances in bottles and form a reaction which must be handled with care to ensure it doesn't spill.

This is therefore the reason why the option true was chosen as the most appropriate choice.

Read more about Chemical reaction here brainly.com/question/11231920

#SPJ1

4 0
2 years ago
Other questions:
  • This planet is know as the "Red" planet. It has polar ice caps and is believed to have once had liquid water on its surface.
    15·1 answer
  • Write the number of atoms of each element found in one unit of the compound:
    8·2 answers
  • What does the arrangement of the periodic table tell scientists
    7·1 answer
  • What is the most basic building block of matter?
    15·2 answers
  • What type of hybridization is needed to explain why ethyne, C2H2, is linear?
    7·1 answer
  • 1 Point
    14·1 answer
  • The branch of chemistry that looks at the release of electrical energy is called
    7·1 answer
  • In an acid-base titration experiment, 50 mL of a 0.05 M solution of acetic acid (Ka= 1.75 x 10-5 ) was titrated with a 0.05M sol
    13·2 answers
  • What is the current in 160V current if the resistance is 20
    12·1 answer
  • C) Which one of the following compounds will react with perrhenic acid? Tick one box.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!