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
MissTica
3 years ago
10

What are signs that a chemical reaction has occured

Chemistry
2 answers:
Alex17521 [72]3 years ago
6 0

Answer:

Color change, formation of a precipitate, heat, formation of a gas, and odor

Explanation:

ikadub [295]3 years ago
4 0
Change in color, temp change, precipitate formed
You might be interested in
A substance registers a temperature change from 20 to 40 to what incremental temperature change does this correspond
ss7ja [257]

<u>Given:</u>

Initial temperature, T1 = 20 C

Final temperature, T2 = 40 C

<u>To determine:</u>

The temperature change

<u>Explanation:</u>

Convert degree C to Kelvin

Temperature in Kelvin = degree C + 273

T1 = 20 + 273 = 293 K

T2 = 40 + 273 = 313 K

Incremental temperature change = T2 - T1 = 313-293 = 20 K

Ans: The temperature change in kelvin is 20 K

3 0
3 years ago
After creating a definition for what it means to be sexually abstinent, list reasons why being abstinent is important for you an
Sever21 [200]
Sexually abstinent: refraining from some or all sexual activities
school (higher education)
health (stds)
pregnancy (not ready for children)
5 0
3 years ago
234+34.1 add and round to 2 significant figures
marin [14]
Like this? 234+34.1= 268.1 then round. If it is less than 5 then you round down if it is more then you round up. Because it is less the final number would be 268.1=268
3 0
3 years ago
Sound _____.
AysviL [449]

Answer:

Sounds travels in transverse waves requires a medium to travel through

4 0
2 years ago
Read 2 more answers
Which resource is renewable?<br> coal <br> oil<br> steel<br> wind
Digiron [165]

Answer: wind

Explanation:

5 0
2 years ago
Read 2 more answers
Other questions:
  • The chemical formula for rubies is AI2O3 list the elements that combine to form a ruby and the number of atoms of each element i
    10·1 answer
  • How many molecules and atoms of oxygen are present in 5.6 liters of oxygen (O2) at STP?
    15·2 answers
  • Which of the following is true about chemical reactions. A. they are accompanied by changes in energy. B. they form new substanc
    9·1 answer
  • Calculate the mole fraction of each component in a solution with 6.87 g of sodium chloride (NaCl) dissolved in 65.2 g of water.
    8·1 answer
  • What subatomic particles are found in the nucleus and in the electron cloud
    11·2 answers
  • How many molecules are there in 79g of Fe2O3? how many atoms is this?
    12·1 answer
  • HELP ASAP PLEASE!!! WILL MARK BRAINLIEST, ONLY ANSWER IF YOU'RE SURE
    9·2 answers
  • Explain why the surface of the tire melts.
    13·1 answer
  • Explain why ionic compounds are formed when a metal bonds with a nonmetal, but covalent compounds are formed when two nonmetals
    12·2 answers
  • 40.0L of N₂ gas are in a sealed container at STP.How many moles of N₂ are present?9 mol
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!