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
IrinaVladis [17]
3 years ago
7

Classify each of the observed changes according to whether or not they are likely to represent evidence that a chemical reaction

is occurring when performing an experiment.
May be evidence of a chemical reaction Not evidence of a chemical reaction
a solution color becoming less intense
due to dilution
bubbles (sas formation) changes in color
precipitation
explosion or fire
Answer Bank
a solid liquifying change in temperature solution colors mixing
Chemistry
1 answer:
Mama L [17]3 years ago
8 0

Answer:

a solution color becoming less intense  due to dilution- is not an evidence of a chemical reaction

bubbles (gas formation) - evidence of a chemical reaction

explosion or fire - evidence of a chemical reaction

changes in color- evidence of a chemical reaction

precipitation- evidence of a chemical reaction

changes in temperature - evidence of a chemical reaction

a solid liquifying - is not an evidence of a chemical reaction

solution colors mixing - is not an evidence of a chemical reaction

Explanation:

A chemical change is not easily reversible and yields new substances. It is often accompanied by a loss or gain of heat.

In the answer section, i have shown some evidences that lead us to conclude that a chemical reaction has taken place. The occurrence of a chemical change often goes with the formation of new substances as earlier stated and any of these signs may accompany the process.

For instance, when a metal is dropped in dilute acid solution, bubble of hydrogen gas indicates that a chemical reaction has taken place.

You might be interested in
The chemical formula for sodium sulfate is Na2SO4. How many sulfur atoms are in the formula for sodium sulfate?
Gemiola [76]

Answer:

1

Explanation:

there is only one sulphur (S) atoms in the formula for sodium sulphate

5 0
3 years ago
Read 2 more answers
Which would be expected to have the higher boiling point, t-butyl alcohol (2-methyl-2-propanol) or n-butyl alcohol (1-butanol)?
Readme [11.4K]
I would imagine that n-butanol would have the higher boiling point because it has less branching and therefore stronger intermolecular forces between molecules.
3 0
3 years ago
Match the careers in chemistry.
Mandarinka [93]
The careers in chemistry should be closely related to working with chemical substances and the methods involved in experiments. Thus, the answers are finds practical applications information chemist and<span> market research R&D.</span>
3 0
3 years ago
Read 2 more answers
Probability is a number that describes how likely it is that a certain event will occu O True O False​
lara31 [8.8K]

Answer:

Between 0 and 1

Explanation:

Hope this helps :)

6 0
3 years ago
Question:
Elina [12.6K]

H2SO4 + ZN ------- ZNSO4+ H2

(SO4)²The sulphate salt is formed......

Hope it helps

8 0
3 years ago
Other questions:
  • Describe how heart failure affects the body.
    7·1 answer
  • Which is classified as an inner transition element
    10·2 answers
  • Cobalt III hydroxide and nitric acid react according to the following balanced equation:
    7·1 answer
  • How would you describe an isotope?
    6·1 answer
  • Change 1m 31cm to cm​
    7·2 answers
  • What type of elements are in s-block
    14·1 answer
  • What is the conclusion of Rutherford atomic model?​
    10·1 answer
  • The mole concept will most likely be used in
    13·1 answer
  • Given that a 3cm lenght of magnesium weights approximately 0.04g, calculate the number of moles of acid that reacted with the 9c
    11·1 answer
  • What is the density of a 500g box whose volume is 67 ml?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!