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
polet [3.4K]
3 years ago
11

Which of the answer choices correctly identifies a scenario that displays evidence a chemical reaction is occurring?

Chemistry
2 answers:
d1i1m1o1n [39]3 years ago
8 0

Answer: Option (b) is the correct answer.

Explanation:

A chemical reaction is the one in which there occurs change in the chemical composition of a substance in order to result in the formation of a new compound.

For example, when sugar burns then it means it is chemically reacting due to which it turns into black.

On the other hand, a physical change is the one in which there occurs no change in chemical composition of a substance. As a result, no new compound is formed.

For example, Paper absorbs liquid and sinks, Water boils and evaporates, and  Glass vibrates and shatters are all physical changes.

Thus, we can conclude that sugar burns and turns black correctly identifies a scenario that displays evidence a chemical reaction is occurring.

tigry1 [53]3 years ago
5 0
Sugar burns and turns black. A completely new substance was formed, which is the main pointer for it being a chemical reaction. More evidence would be change of color, odor, and the fact that flammability is a chemical property so setting something on fire would be a chemical change.
You might be interested in
Does anyone know how to write out the formula for these?? not just the answer x
Tju [1.3M]
Idk how to write the formula I had this same question
5 0
3 years ago
Consider the two facts below:
OLEGan [10]

Answer:

A. There is more dissolved oxygen in colder waters than in warm water.

D. If ocean temperature rise, then the risk to the fish population increases.

Explanation:

Conclusion that can be drawn from the two facts stated above:

*Dissolved oxygen is essential nutrient for fish survival in their aquatic habitat.

*Dissolved oxygen would decrease as the temperature of aquatic habit rises, and vice versa.

*Fishes, therefore, would thrive best in colder waters than warmer waters.

The following are scenarios that can be explained by the facts given and conclusions arrived:

A. There is more dissolved oxygen in colder waters than in warm water (solubility of gases decreases with increase in temperature)

D. If ocean temperature rise, then the risk to the fish population increases (fishes will thrive best in colder waters where dissolved oxygen is readily available).

4 0
3 years ago
Which would most likely cause a person to produce antibodies?
rosijanka [135]

Answer:

receiving a vaccination

Explanation:

7 0
3 years ago
Read 2 more answers
In the reaction mg 2hcl right arrow. mgcl2 h2 which element’s oxidation number does not change? cl mg h
netineya [11]

The correct answer is Cl.

Chlorine is a substance that's employed in industry and is present in a number of household goods. There are times when chlorine takes the form of toxic gas. Chlorine gas can be converted into a liquid by applying pressure and cooling so that it can be transported and stored. The term "oxidation number" refers to the number of electrons that an element's atom either loses or gains during the production of a compound. The charge that an atom seems to have when forming ionic connections with other heteroatoms is used to define an atom's oxidation number. Even if it develops a covalent bond, an atom with a higher electronegativity is given a negative oxidation state.

Learn more about oxidation numbers here:-

brainly.com/question/10079361

#SPJ4

5 0
1 year ago
If your car gets 30.3 mi/gal, how many gallons of gasoline would you use if you drove 506.3 miles? 1 mile = 5280 ft (exactly) In
Salsk061 [2.6K]

Answer: 16.7 gallon

Explanation:

Given: The car can drive 30.3 miles when 1 gallon of gasoline is used.

Distance covered = 506.3 miles

Thus for 30.3 miles, the amount of gasoline used= 1 gallon

For 506.3 miles, the amount of gasoline used=\frac{1}{30.3}\times 506.3=16.7gallon

Thus the amount of gasoline used is 16.7 gallons.


4 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose that atom x undergoes radioactive decay that results in atom y. If y has a larger atomic number than x, which type of ra
    13·1 answer
  • An object at 20∘C absorbs 25.0 J of heat. What is the change in entropy ΔS of the object? Express your answer numerically in jou
    12·1 answer
  • What causes the jet stream to move farther south?
    15·1 answer
  • Which of the following is the largest volume? 4.0 x 101 m3 3.8 x 107 cm3 3.8 x 105 dm3 3.8 x 108 mm3
    13·1 answer
  • What compound is always part of an aqueous solution
    11·2 answers
  • What is the percent yield of ferrous sulfide if the actual yield is 220.0 g and the theoretical yield is 275.6 g
    13·2 answers
  • Why does dew form on the outside of your glass filled with ice cold water?
    13·1 answer
  • A 55.0 L sample of gas at 235 K exerts a pressure of 225 KPa. If its volume is decreased to 42.0 L and the temperature rises to
    6·1 answer
  • Determine which elements or compounds are products in the<br> follow reaction equation:
    14·1 answer
  • A solution at ph 10 contains __________ than the same amount of solution at ph 8.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!