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
Fynjy0 [20]
3 years ago
8

A variable is something that can never be changed in an experiment. False True

Chemistry
1 answer:
Agata [3.3K]3 years ago
3 0
I’m pretty sure it true
You might be interested in
In Nuclear chemistry, the key requirement for a chain reaction is that...a. each event must produce more than one particle capab
ahrayia [7]

Cccccccccccccccccccccccc

5 0
3 years ago
Which of these is an indication that a chemical reaction has occurred?
Kobotan [32]

<u><em>Answer:</em></u>

  • The correct option is C.
  • Formation of a precipitate

<u><em>Explanation:</em></u>

During a chemical reaction, new substances are formed known as a products, mostly reaction occur and their product is obtained as precipitates.

<u><em>Example</em></u>

Arylidene-2-thiobarbituric acid is obtained as precipitates when aldehyde and thiobarbituric acid react to each other.

melting of a substance

It is just indication of physical changes, like melting of ice, composition remained same as before.

boiling of a substance

It is just indication of physical changes, like boiling of water into vapors, composition remained same as before.

freezing of a substance

It is just indication of physical changes, like freezing of water into ice, composition remained same as before

7 0
3 years ago
Read 2 more answers
As a result of the gold foil experiment, it was concluded that an atom(1) contains protons, neutrons, and electrons(2) contains
grin007 [14]
The answer is (2). If you recall Rutherford's gold foil experiment, remember that a stream of positively charged alpha particles were shot at a gold foil in the center of a detector ring. The important observation was that although most of the particles passed straight through the foil without being deflected, a tiny fraction of the alpha particles were deflected off the axis of the shot, and some were even deflected almost back to the point from which they were shot. The fact that some of the alpha particles were deflected indicated a positive charge (because same charges repel), and the fact that only a small fraction of the particles were deflected indicated that the positive charge was concentrated in a small area, probably residing at the center of the atom.
8 0
3 years ago
Use the big bang theory to explain why scientists do not expect to find galaxies that have large blue shifts.
STALIN [3.7K]

Answer:

becoz they want so

we cant explain ^^

5 0
2 years ago
I WILL GIVE THE BRAINLIEST
Sauron [17]

The Photo Isn't Clear At All.

8 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following devices can measure only atmospheric pressure?     
    11·1 answer
  • hat historical figure was responsible for developing the system for categorizing living things that is still used today? A) Sir
    11·1 answer
  • If a neutral atom has a mass of 12 amu and an atomic number of 5, determine the number of protons, neutrons, and electrons in th
    14·2 answers
  • Which of the following temperature is the coldest:
    8·2 answers
  • Did I do everything right?
    10·1 answer
  • When the North Pole of one magnet is next to another North Pole of the other manger they will repel. True or false
    11·1 answer
  • A gas with a pressure of 820.4 mmHg occupies a
    15·1 answer
  • A model for a potential chemical reaction is shown here. Evaluate the model and the reaction shown. Which statements are correct
    6·1 answer
  • Please answer this
    8·1 answer
  • Calculation: If a compound is 14.40% hydrogen by mass and 85.60% carbon by mass, what is the empirical formula?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!