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
In-s [12.5K]
3 years ago
6

Which of these is an indication that a chemical reaction has occurred? A.Melting of a substance B.Boiling of a substance C.Forma

tion of a gas D.Freezing of a substance
Chemistry
1 answer:
podryga [215]3 years ago
7 0

The answer is formation of gas because melting, boiling, and freezing are only property changes

You might be interested in
The total number of each element is not changed during a chemical reaction
Paha777 [63]

false all element when they are combined eachother thier valance number will change

the combination of oxygen and aluminum gives us Al2O3 see even the numbers are changing thank you if you have a comment you can write

3 0
3 years ago
Which has a higher ionization energy: chlorine (Cl) or magnesium (Mg)? Why? Select the best answer
algol [13]

Removal of the loosely bounded electron is defined by the ionization energy. Chlorine needs less energy to add electrons and has higher ionization power. Thus, option A is correct.

<h3>What is ionization energy?</h3>

The ability of an electron to accept or give electrons to another element in a chemical reaction by forming and creating bonds and the positive and negative charges has been defined by the ionization energy.

Magnesium has lower ionization energy than chlorine due to its large size and smaller nuclear charge. On the other hand, chlorine can easily add electrons to the valence shell which is almost full.

Therefore, option A. chlorine has higher ionization energy and can add electrons with minimum energy.

Learn more about ionization energy here:

brainly.com/question/6842791

#SPJ1

3 0
1 year ago
A solution is prepared by dissolving 51 g of salt in 340 g of
garri49 [273]

Answer:

okķkkkkkkkkkkkkkkkkkkkkk.I don't know the answer. GIVE THANKS

5 0
3 years ago
What is 20 times 200000000
iren [92.7K]

Answer: 4000000000

because 20X200000000=4000000000

4 0
3 years ago
Please help me :( thank you so much and if you can show work I would really appreciate it
Katyanochek1 [597]

Answer:

D

Explanation:

On the left hand side there are a total of 4 hydrogen and 2 oxygen but on the right hand side there Is only 2 hydrogen and 1 oxygen

6 0
3 years ago
Other questions:
  • What is the ph of a 2.7 m solution of hclo4?
    10·1 answer
  • Calculate the man’s height . (Use PE = m × g × h, where g = 9.8 N/kg.)
    9·1 answer
  • I need help. It’s due tonight. Thanks
    5·2 answers
  • A __________ is the basic unit of structure and function in living organisms.
    11·2 answers
  • Glucose is a product of photosynthesis. where do the carbon atoms in glucose come from?
    15·2 answers
  • Pure water has a pH of 7. Pure water _______.
    12·1 answer
  • The equation, 2 H2(g) + O2(g) Imported Asset 2 H2O(l), represents an equation for a standard formation reaction.
    11·2 answers
  • What is unique about obtaining water from an artesian well?
    12·2 answers
  • How many different types of atoms are in the formula Ba(OH)2 • 8H2O?
    12·1 answer
  • HELPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!! 30 POINTS!!!!!!!!!!!!!!
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!