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
Oxana [17]
3 years ago
9

What is the difference between chemical change and physical change

Chemistry
1 answer:
Nadusha1986 [10]3 years ago
7 0
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. Hope this helps!
You might be interested in
Need help with this question.... Next to each Formula, write the number of atoms of each element found in one unit of the compou
Andrew [12]

Answer:

The number of atoms present in one unit of the following compounds is:

a). Potassium Iodide , KI = 2

b).Sodium Sulfide, Na_{2}S = 3

c). Silicon Dioxide , SiO_{2} = 3

d). Carbonic Acid ,H_{2}CO_{3} = 6

Explanation:

Atomicity : It is defined as the number of atoms that are present in a given molecule/compound.

Atom : The smallest unit of matter is called atom. For e.g O is atom of oxygen but O_{2} is not an atom , it is molecule of oxygen .

O_{2} molecule has 2 atoms of Oxygen

Similarly  Na , K , Fe are atoms but O_{2} ,CO_{2} ,N_{2},H_{2}  are molecules

a).Potassium Iodide

KI = 1 atom of K + 1 atom of I

Total atoms = 2

b) Sodium Sulfide

Na_{2}S = 2 atoms of Na + 1 atom of S

Total atoms = 3

c) Silicon Dioxide

SiO_{2} = 1 atom of Si + 2 atoms of O

Total atoms = 3

d) Carbonic Acid

H_{2}CO_{3} = 2 atom of H + 1 atom of C + 3 atom of O

= 2+1+3

Total atoms = 6

7 0
3 years ago
Which is a chemical property of iron
Whitepunk [10]

a chemical property of iron is the ability to change it, hammer it, roll it, shape it etc

5 0
3 years ago
Read 2 more answers
Select the word or phrase that best completes each of the following sentences.
harina [27]

Answer:

1. Cells

2. Molecules

3. Organ

3 0
3 years ago
Read 2 more answers
Which reason best explains why carbon is able to form macromolecules?
Tanya [424]
Carbon atoms are extremely small and are one of the only atoms that are structurally stable enough to form various different kinds of macromolecules.
6 0
3 years ago
Which chemical equation represents a redox reaction?
noname [10]

Answer:

Assign oxidation numbers to all atoms in the equation.

Compare oxidation numbers from the reactant side to the product side of the equation.

The element oxidized is the one whose oxidation number increased.

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • The organ system that allows for movement of the organism as a whole an for internal movement of food through the digestive syst
    15·1 answer
  • If element X has 25 protons, how many electrons does it have?
    6·2 answers
  • Where can volcanoes form?
    15·1 answer
  • The graph shows the distribution of energy in the particles of two gas samples at different temperatures, T1 and T2. A, B, and C
    10·1 answer
  • What would make bromide salt insoluble in water?
    13·1 answer
  • 1)Why do clouds usually form high in the air instead of near Earth's surface?
    12·1 answer
  • g The theoretical yield of a certain reaction is 123 g of Al2O3. If the actual yield when the experiment is performed is 0.209 m
    6·1 answer
  • What is the correct name for the following compound?<br> LIAF
    10·1 answer
  • Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
    10·1 answer
  • Provide a set of step by step instructions to make 750 mL of 1.5 M calcium chloride solution.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!