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
Vesnalui [34]
3 years ago
9

How can you tell a chemical change has happend?

Chemistry
1 answer:
Maru [420]3 years ago
3 0

Answer:

a chemical change are a change in color and the formation of bubbles.

chemical change: color change, formation of a precipitate, formation of a gas, odor change, temperature change.

Explanation:

Change it up a little bit and your teacher will never know. :)

You might be interested in
When two immiscible liquids are mixed, what physical property determines which solvent layer will be on top?
Digiron [165]

Answer:

Density of the liquid.

Explanation:

Density is the mass per unit volume of a substance.

At specific volume of each immiscible substance, the substance with lower relative molecular mass has the lower density and such floats.

Thus, the physical properties that determines the solvent layer that will be on top is DENSITY.

3 0
4 years ago
How many moles are in 28g of Fe2O3
nlexa [21]

Find the molar mass of Fe_2O_3

2Fe = 2*56 = 112

3O = 3* 16 =    48

Molar Mass = 160 grams

moles= given mass / molar mass

moles = 28 / 160

moles = 0.175   <<<< answer

6 0
4 years ago
Can you explain what makes Earth habitable using science vocabulary words system &amp; planetary geologist
finlep [7]
Earth is the right distance from the sun. It’s protected from harmful solar radiation by its magnetic field and the atmosphere keeps it warm. Earth contains the right chemical ingredients to sustain life such as H2O (water) and C (carbon)
7 0
3 years ago
Read 2 more answers
Can somebody plz tell me which one I should circle for each question thanks!!!
marusya05 [52]

Answer:

1. False

2. True  

3. True

4. True

5. False

Explanation:

7 0
3 years ago
Read 2 more answers
Give the complete balanced equation for the reaction that occurs when lithium carbonate (LiCO3) is heated
Eva8 [605]
LiCO3-> LiO+ CO2
It is already balanced as there is one Li on each side, one C on each side and three Os on each side.
5 0
3 years ago
Other questions:
  • What is the ratio of [a–]/[ha] at ph 2.75? the pka of formic acid (methanoic acid, h–cooh) is 3.75?
    5·1 answer
  • At which stage does a gas form in a gas formation reaction?
    11·1 answer
  • • A gas occupies what volume at a pressure of 5.4<br>atm, 3.5 moles of gas, at 333 K?​
    9·1 answer
  • Peptides can be separated using an ion‑exchange column based on their isoelectric (pI) values. At which pH values would two diff
    11·1 answer
  • What is the pOH of a solution with a [OH-] of 10-11
    12·1 answer
  • the specific temperature at which a substance changes from a liquid to a gas is an example of a a. chemical bond. b. chemical ch
    10·2 answers
  • What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large
    8·2 answers
  • Question
    14·1 answer
  • If you have 6.00 x 10^24 molecules of oxygen how many moles of oxygen would you have?
    15·1 answer
  • HELP!!how can the Rescue workers get energy to the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!