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
astra-53 [7]
2 years ago
15

If someone takes a material that looks pure, and then they do something to it that results

Chemistry
1 answer:
Sati [7]2 years ago
7 0

Answer:

The determination of the nature of the combination of the two separate materials in the original material that looks pure is based on the characteristic of the change process they undergo to become two separate materials.

Therefore, they can know if they initially had a mixture or a compound by the following steps;

1) If the two separated materials can be easily remixed to form the original material, then they likely have a mixture of the two separate materials

2) If the process that results in the formation of the two separate materials, involves the absorption or evolves heat or other forms of energy, then the original substance was a compound

3) If the two newly formed materials is seen to be a permanent change, then the original material was a compound

Explanation:

You might be interested in
Using water to measure the volume of small irregular shaped objects is called? *
Fed [463]

Answer:

B. water displacement is used "graduated cylinder is filled with water (100 mL) and the object is then put inside. ... If the new water level is (120 mL) we now know that the object has a volume of 20 mL."

Explanation:

4 0
2 years ago
Read 2 more answers
Anthracite coal d) is the most abundant grade of coal e) is very soft and burns at high temperatures a) causes the most air poll
forsale [732]

Answer: The correct option is C ( is very hard and burns cleanly).

Explanation:

COAL is a form of rock that is made up of mostly carbon amongst other elements which includes sulphur, nitrogen, hydrogen and oxygen. There are different types of coal which include:

--> anthracite ( 90% carbon)

--> bituminous coal ( 70-90% carbon)

--> lignite ( 60- 70% carbon) and

--> peat (60 % carbon).

Anthracite is the type of coal that contains the highest carbon content ( 90% carbon). This makes it very hard and is often a times referred to as HARD COAL. Anthracite is a higher quality coal for domestic and open fire heating. This is because it contains less impurities than other type of coal and thereby making it to BURN CLEANLY avoiding atmospheric pollution.

6 0
2 years ago
Which of these processes are chemical reactions?
masya89 [10]
Rotting vegetables is a chemical change I think.
8 0
3 years ago
Which of the following would likely occur as a result of an oil spill in the ocean?
FinnZ [79.3K]

Answer:

D.

Explanation:

The Oil spill effects on environments and habitats can be catastrophic: they can kill plants and animals, disturb salinity/pH levels, pollute air/water and more. Read more about the types of oil pollution.

6 0
2 years ago
Read 2 more answers
How to separate sand, pebbles, toothpicks and paper clips?<br>plzzzzzzzzzzzzzzzzzzzzzzzz
Step2247 [10]
First, by magnet separate paper clips.
Then, By handpicking, separate the pebbles.
Then, using a suitable sieve, separate toothpicks and toothpicks.
6 0
2 years ago
Other questions:
  • Which represents potential energy? A)bread baking B)lawnmower cutting grass C)car racing downhill D)weed whacker full of gas
    9·2 answers
  • If Hershey and Chase had used radioactive oxygen in their experiments instead of phosphorus and sulfur, what results would they
    13·1 answer
  • A sample of neon occupies a volume of 478 mL at STP. What will be the volume of the neon when the pressure is reduced to 93.3 kP
    15·1 answer
  • The fundamental particles of protons and neutrons are called....
    9·2 answers
  • Do water and ice have the same composition
    10·2 answers
  • In general, the value of the equilibrium constant for a chemical reaction does NOT depend on_________.
    11·1 answer
  • What is the percent composition of Br in CuBr3?
    13·1 answer
  • 24. What type of cloud is in the picture?<br> cumulus<br> cirrus<br> altostratus<br> stratus
    6·1 answer
  • What is the molality of a D-glucose solution prepared by dissolving 36.0 g of D-glucose, C6H12O6, in 125.9 g of water
    6·1 answer
  • If a 50kg water rocket takes off with a force of 250 newtons, what is its acceleration?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!