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
alukav5142 [94]
3 years ago
15

What is the most important clue that a chemical reaction is taking place?

Chemistry
1 answer:
Paul [167]3 years ago
7 0
I will give you two clues just incase:

-Change in temperature-usually when a reaction takes place heat will be absorbed or released which result in a temperature change.-eg: put a piece of sodium in water. you will feel or observe that the temperature is increased


-Change in colour-Some times we see a colour change in the media when a reaction takes

How important each one is depends on what you are learning about a chemical reaction. Hope I helped!
You might be interested in
What is the concentration of the murexide soution with a transmittance of 28.65%. (molar absorptivity = 3847)
Ainat [17]

Answer:

The concentration of the murexide solution is 0.0000745 M

Explanation:

From Beer-Lambert's law,

A = εlc

A = Absorbance = 28.65% = 0.2865

ε = molar absorptivity = 3847 M/cm

l = path length = 1cm

c = concentration in mol/L = ?

c = A/εl = 0.2865/(3847×1) = 0.0000745 mol/L

Hope this Helps!

6 0
3 years ago
If A and B have the SAME mass. A floats and B sinks. B MUST have a
Alexandra [31]

Answer:

volume

Explanation:

6 0
3 years ago
Read 2 more answers
Please help ill give you a 100 points! Its urgent!! Q^Q
Sergio [31]

Answer:

1. C.

Explanation:

8 0
3 years ago
Read 2 more answers
The process of chlorination in water treatment aims at ?​
Andrews [41]

Answer:

Chlorowanie wody jest procesem względnie tanim – koszt zbudowania samej instalacji do dezynfekcji, jak również koszt operacyjny wytworzenia 1 metra sześciennego uzdatnionej chlorem wody jest niższy od dezynfekcji wody za pomocą ozonu. Źródłem chloru w procesie dezynfekcji jest zazwyczaj podchloryn sodu, rzadziej dwutlenek chloru.

Explanation:

8 0
2 years ago
To save on heating bills, do you think the roof of a building should be lined with
bekas [8.4K]
A thermal insulator because it would keep the heat in
4 0
3 years ago
Read 2 more answers
Other questions:
  • Martije has made a slight error in naming a compound monocarbon tetrabromide. What compound is she most likely naming, and what
    5·2 answers
  • The density of sea water is 1.029 kilograms per liter. What is the density of
    13·1 answer
  • Which energy level requires the most energy to remove an electron?
    9·1 answer
  • How are a mold and cast related?
    14·2 answers
  • Karen has a mass of 53 kg as she rides the up escalator at woodley park station of the washington
    7·1 answer
  • Why is thermal energy produced not generally usable to do work
    6·2 answers
  • Which characteristic might identify a substance as an Arrhenius base?
    13·2 answers
  • If you lick boo boo and eat it, will you get sick?
    10·1 answer
  • Plz download the doc and answer its due in 20 mins like bro wth
    9·2 answers
  • Both circles above represent the same area of air and the green dots represent air
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!