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
Varvara68 [4.7K]
3 years ago
12

3. A student mixes a solid powder into a beaker of fluid. Which of the following would indicate that a chemical change has defin

itely occurred?​
Chemistry
1 answer:
Ket [755]3 years ago
5 0

Explanation:

A chemical change is a change in which a new kind of substance is produced. Such changes are always accompanied by energy changes.

They are mostly reversible.

Some examples of such reactions are combustion, rusting of iron, precipitation, rancidity of butter, souring of milk.

  • There might be some little change in mass
  • It requires a considerable amount of energy
You might be interested in
A general term for a chemical which accelerates a reaction without becoming chemically involved is called a ______.
AleksAgata [21]

Answer:

Catalyst

Explanation:

A general term for a chemical which accelerates a reaction without becoming chemically involved is called a catalyst.

Catalysts are used in industrial processes to speed up the rate of a chemical reaction. For instance, in the Contact process used in the production of sulphuric (vi) acid, vanadium(V) oxide (V2O5) is used as a catalyst to speed up the production of the acid. Vanadium(V) oxide (V2O5) is preferred to Platinum which was initially used as the catalyst since it does not react with any of the products of the process

6 0
3 years ago
How many moles are in 4.85 x 10^25 atoms of carbon?
Serjik [45]

Answer:

4.85 x 10^25

Explanation:

thats what i was told by a calculator

6 0
3 years ago
How are molecules built?
marin [14]

Answer:

By bonding due to the attractive forces

8 0
3 years ago
The collective name for the abiotic factors which include light, temperature, water, atmospheric gases and wind.​
frosja888 [35]
I believe it is climatic factors
6 0
2 years ago
What is the result of mixing a water molecule and an oxygen molecule?
Julli [10]

The result of this would be H₂O.

H₂0, is nothing but water.

A chemical reaction is occurring.

Hope this helps! :D

4 0
3 years ago
Other questions:
  • 3. The bonds between hydrogen and oxygen in water differ from the bonds between hydrogen and carbon in carbohydrates. How and wh
    8·1 answer
  • Why are the carboxylic acid groups of the amino acids so much more acidic (pka~ 2) than a carboxylic acid such as acetic acid (p
    6·1 answer
  • Which phase lasts longer, a full moon or a new moon?
    5·2 answers
  • The standard cell potential (E°cell) for the reaction below is +0.63 V. The cell potential for this reaction is ________ V when
    16·1 answer
  • PLEASE HELP WITH SCIENCE!!!!!!!!!!
    12·1 answer
  • What can be found in the Asteroid Belt?
    12·1 answer
  • Find the volume of 6.45 moles of gas present at a temperature of 27.0oC and a pressure of 675 torr.
    7·1 answer
  • Explain why resonance structures are used instead of Lewis structure to correctly model certain molecules
    11·1 answer
  • The average speed of an oxygen molecule is 6.14 x 104 cm/sec at a certain temperature. What is the average speed of a CO2 molecu
    5·1 answer
  • Can someone help me please
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!