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
Phantasy [73]
3 years ago
12

Explain the most important difference between a physical and chemical change.

Chemistry
2 answers:
timama [110]3 years ago
7 0
You can see a physical change always but not always a chemical
Semmy [17]3 years ago
6 0

Answer:

answer below... hope this helps

Explanation:

When a substance undergoes a <u>physical change</u>, its composition remains the same despite its molecules being rearranged. When a substance undergoes a <u>chemical change</u>, its molecular composition is changed entirely. ... Some examples of physical change are freezing of water, melting of wax, boiling of water, etc.

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 is a chemical change

You might be interested in
What is the full ionic equation for CuCl2 and (NH4)2SO4?
melisa1 [442]

The full ionic chemical balanced equation for CuCl2 and (NH4)2SO4 is 2(NH4)Cl + CuSO4.

Explanation:

The full ionic chemical balanced equation for CuCl2 and (NH4)2SO4 is

CuCl2 + (NH4)2SO4 ⇔ 2(NH4)Cl + CuSO4.

Here the left side one's are reactants i.e.,CuCl2 and (NH4)2SO4.

The right siders are products i.e.,(NH4)Cl and CuSO4.

The complete ionic equation is used to include both chemical species as well as spectator ions. It is used to indicate which of the reactants and products in the equation exists primarily as ions in aqueous solution.

It is nothing but a chemical equation in which electrolytes which are soluble in water are formed as dissociated ions.

The above chemical reaction is double displacement reaction.

3 0
3 years ago
When cooking frozen cheese ravioli, the directions say to put the 255 grams of filled pasta into 3 quarts of boiling water. why
kondaur [170]
<span>When cooking frozen cheese ravioli, you should use three quarts of water instead of one so that the raviolis have room to move around in the boiling water and so that while they are moving around, they will not stick to each other or the pan.</span>
8 0
3 years ago
Calculate the formula mass of calcium iodate, ca(io3)2, in atomic mass units (amu or u).
VARVARA [1.3K]
<span>389.88094 amu First we look up the atomic mass of all elements contained in calcium iodate using the periodic table: Ca: 40.078 I: 126.90447 O: 15.999 As an intermediate step we calculate the molecular mass of the ion IO3: 126.90447 + 3*15.999 = 174.90147 Then we calculate the mass of one calcium atom and 2 iodate ions: 2*174.90147 + 40.078 = 389.88094 amu</span>
7 0
3 years ago
Which one is a compound
zheka24 [161]

Answer:

CO

Explanation:

the rest are elements. CO is made up of one carbon atom and one oxygen atom

5 0
3 years ago
Pls help 25 pts
mote1985 [20]

Answer:

In the quantum-mechanical model of an atom, electrons in the same atom that have the same principal quantum number (n) or principal energy level are said to occupy an electron shell of the atom. Orbitals define regions in space where you are likely to find electrons.

6 0
2 years ago
Other questions:
  • An unknown compound displays singlets at δ 2.1 ppm and 2.56 ppm in the ratio of 3:2. what is the structure of the compound?
    14·1 answer
  • Convert the given amount as noted.
    9·1 answer
  • Which is the best step for Peta to take next? During a science lab, Peta poured two clear chemicals into different beakers. Afte
    5·1 answer
  • How many total atoms are in 5C3
    9·1 answer
  • All are types of chemical reactions except __________. A) decomposition reactions B) synthetic reactions C) single replacement r
    10·1 answer
  • Answer this if u know science please
    12·1 answer
  • Element that is the "best" at removing electrons from other atoms.
    11·1 answer
  • How did you spend your Easter?
    14·1 answer
  • What is the concentration of a solution with a
    13·1 answer
  • A chemist is studying small organic compounds for their potential use as an antifreeze. When 0.243 g of a compound is dissolved
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!