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
Finger [1]
3 years ago
7

Which of the following is NOT a clue that a chemical change has occurred? * 1 point Sugar turns blackish-brown as it is heated.

Baking soda and vinegar fizz when they are mixed. Sugar produces a caramel odor when it is heated. Steam is produced when water is heated.
Chemistry
1 answer:
Vladimir [108]3 years ago
5 0

Answer:

The answer is Steam is produced when water is heated. The color does not change, a precipice is not formed, and the odor does not change!

You might be interested in
The Lucas test has _______ results based on the type of alcohol present because the reaction involves a _________, which is ____
Olin [163]

Answer:

1) positive

2) carbocation

3) most stable

4) faster

Explanation:

A common test for the presence of alcohols can be achieved using the Lucas reagent. Lucas reagent is a mixture of concentrated hydrochloric acid and zinc chloride.

The reaction of Lucas reagent reacts with alcohols leading to the formation of an alkyl chloride. Since the reaction proceeds via a carbocation mechanism, tertiary alcohols give an immediate reaction. Once a tertiary alcohol is mixed with Lucas reagent, the solution turns cloudy almost immediately indicating an instant positive reaction.

Secondary alcohols may turn cloudy within five minutes of mixing the solutions. Primary alcohols do not significantly react with Lucas reagent obviously because they do not form stable carbocations.

Therefore we can use the Lucas reagent to distinguish between primary, secondary and tertiary alcohols.

5 0
3 years ago
How many lone pairs of electrons in lewis structure of CH3 OH
Brums [2.3K]
There would be 2 which would be on the oxygen
4 0
3 years ago
Atoms of metallic elements tend to
melomori [17]

Answer:

D

Explanation:

One of the properties of metals is their abilities to form a stable compounds by losing electron(s). Metals form positive ions (cations) when they lose electron(s).

6 0
3 years ago
Hhhhhhhhhhheeeeeeelppppppp<br>will give brainliest
wlad13 [49]

Answer:

Kinetic energy.

Explanation:

7 0
3 years ago
Which of following statements is true about scientific knowledge? Scientific ideas are not subject to change, so scientific know
Romashka [77]

Answer:

The accepted views of science knowledge can change over time. Changes can result from new science observations, but can also be affected by social, political or religious convictions. To develop a deeper understanding, students need to investigate the context of the time in which science ideas were developed.

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Q #4 please help if you are sure
    5·1 answer
  • An empty beaker weighs 32.4257 grams. A 10 ml pipet sample of an unknown liquid is
    5·1 answer
  • The rate law for a reaction is rate = k[A]2. What is the overall order of this reaction, and which two varaibles, when graphed,
    12·1 answer
  • When 100 mL of 1.0 M Na3PO4 is mixed with 100 mL of 1.0 M AgNO3, a yellow precipitate forms and [Ag ] becomes negligibly small.
    15·1 answer
  • This exercise deals with safety issues in the Freezing Point Depression experiment. Choose the answer that best completes each s
    13·1 answer
  • Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pr
    7·1 answer
  • Assign oxidation numbers to the element in each of the following compounds. Remember an oxidation number is for one atom of the
    13·1 answer
  • Breathe in air container more ____ than breathed out air
    6·1 answer
  • Which phrase describes a polymer? A. a branching structure containing 10 carbon atoms and 22 hydrogen atoms B. a crystal contain
    14·2 answers
  • A man needs to lift a heavy box on the back of a truck or push up a ramp or lift it straight up from the ground to use around he
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!