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
melamori03 [73]
3 years ago
6

Why do different elements make different color flames when you burn them?

Chemistry
1 answer:
Dovator [93]3 years ago
7 0
When you heat an atom, some of its electrons are "excited* to higher energy levels. When an electron drops from one level to a lower energy level, it emits a quantum of energy. ... The different mix of energy differences for each atom produces different colours. Each metal gives a characteristic flame emission spectrum.
You might be interested in
A sample of hydrogen gas at a pressure of 0.926 atm and a temperature of 29.5 C, occupies a volume of 457 mL. If the gas is allo
klio [65]

Answer:

V₂ = 946.72 mL

Explanation:

Given data;

Initial pressure = 0.926 atm

Initial volume = 457 mL

Temperature = constant = 29.5°C

Final pressure = 0.447 atm

Final volume = ?

Solution:

The given problem will be solved through the Boyle's law,

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

by putting values,

P₁V₁ = P₂V₂

0.926 atm × 457 mL = 0.447 atm × V₂

V₂ = 423.18 atm. mL/ 0.447 atm

V₂ = 946.72 mL

4 0
3 years ago
The chemical equation for a reaction between K2Cr2O7 and HCl is shown. K2Cr2O7 + 14HCl → 2CrCl3 + 2KCl + 3Cl2 + 7H2O
guapka [62]

<u>Answer: </u>The correct answer is Option b.

<u>Explanation:</u>

Oxidizing agent is defined as the chemical reagent which helps the other chemical compound to get oxidized and itself gets reduced. The oxidation state for these species gets reduced because they are undergoing reduction reaction.

For the given chemical equation:

K_2Cr_2O_7+14HCl\rightarrow 2CrCl_3+2KCl+3Cl_2+7H_2O

Oxidation state of Chromium is getting reduced from +6 to +3 and oxidation state of chlorine getting increased from -1 to 0.

Hence, K_2Cr_2O_7 acts like and oxidizing agent because it is itself getting reduced to CrCl_3

Therefore, the correct answer is Option b.

4 0
3 years ago
which of the following cannot be considered a single phase? a) a pure solid b) a pure liquid c) a homogeneous mixture d) a heter
Trava [24]
The question is asking to choose among the following choices is cannot be considered as a single phase and base on my further research and understanding about the sad topic, I would say that the answer would be <span>d) a heterogeneous mixture. I hope you are satisfied with my answer </span>
8 0
3 years ago
Boiling and melting points exploration<br>​
juin [17]

Answer:

Boiling- 212° F melting- 32°F

Explanation:

6 0
3 years ago
F liquid water runs into an open space within a rock, like a crack, and the temperature drops to the freezing point of water, wh
vodomira [7]

Answer:

b or c is the answer

Explanation:

brainlest plz

4 0
3 years ago
Read 2 more answers
Other questions:
  • Scientific knowledge can withstand the test of time because A. exceptions can be made regarding scientific laws. B. it is open t
    9·2 answers
  • What is the current scientific thinking about the formation of the solar system?
    7·2 answers
  • What mass of xenon tetrafluoride, xef 4 , has the same number of fluorine atoms as 25.0 g of oxygen difluoride, of2?
    7·2 answers
  • How many boxes of B would be required to make 30 grams of C?
    10·1 answer
  • How can some of the difficulties caused by the Down Syndrome be over come?
    11·1 answer
  • A 1.1000 gram carbonate sample chosen from Li2CO3, K2CO3, Na2CO3 and CaCO3 was reacted with H2SO4 and was found to lose 0.3497 g
    5·1 answer
  • What are valence electrons?
    6·1 answer
  • Comprehension Questions:
    15·2 answers
  • Why are the discrete lines observed and not a continuous spectrum?​
    14·1 answer
  • 1.____ are two examples of building minerals, whereas 2.____ are two examples of industrial minerals.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!