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
mihalych1998 [28]
3 years ago
14

A scientist is performing an experiment on a powder. Which of the following is a sign that a chemical change has definitely occu

rred during his experiment? The powder catches on fire.
The powder releases bubbles.

The powder heats up.

The powder breaks apart into smaller particles.
Physics
1 answer:
Kitty [74]3 years ago
8 0
B. is the correct answer :)
You might be interested in
A cylindrical tank has a radius of 53 cm and a height of 1200 mm. It weighs 9.6 kN
xxTIMURxx [149]

Answer:

1985kg

Explanation:

assuming that

pi =3.14

oil density = 950kg/ cubic meter

g= 9.8m/s

M=\frac{9600}{9.8 } + 950 * 3.14*.53^{2} *1.2=1985kg

4 0
3 years ago
What is the answers
andriy [413]
Salt is a substance because a substance is a material that has constant composition regardless of its source. Salt is the only option that matches this description
5 0
3 years ago
Cotton balls could be used to represent clouds because of their white color and appearance of texture. Which of these other thin
iris [78.8K]

I just did it the answer is..... B.cobwebs

:)

8 0
3 years ago
Read 2 more answers
The average annual rainfall in Naples, Italy, is 39.6 inches, and the average annual rainfall in Fort Collins, Colorado, is 15 i
Nezavi [6.7K]
The simple answer would be; closeness to the equator combined with general climate.

7 0
3 years ago
Read 2 more answers
When waves enter a denser medium, they bend the normal.<br><br> A) Toward<br> B) Away From
Andreyy89
The answer is bend towards normal.
7 0
3 years ago
Read 2 more answers
Other questions:
  • In which of these biomes do nutrients cycle fastest?
    13·1 answer
  • A snowboarder travels 150 m down a mountain slope that is 65 degrees above horizontal. What is his vertical displacement?
    8·1 answer
  • IN WHAT WAY HAS TECHNOLOGY USED ABOARD THE INTERNATIONAL SPACE STATION BENEFITTED HUMANS BACK ON EARTH?
    15·2 answers
  • Which natural phenomenon occurs as a result of earth rotating on its axis?
    15·1 answer
  • If you were on a ship at sea, and a tsunami passed under your ship, what would probably be your reaction? explain.
    15·1 answer
  • Arteriosclerotic plaques forming on the inner walls of arteries can decrease the effective cross-sectional area of an artery. Ev
    5·2 answers
  • You can report sexual harassment to:
    13·1 answer
  • As more and more resistors are added in parallel to a circuit, the equivalent resistance of the circuit ____________ (increases,
    12·1 answer
  • Democritus discovery
    13·1 answer
  • calculate the currrent passing acrooss a bulb if it has a resistane of 15 ohms and a potentinal difference of 6v is applied acro
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!