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
lutik1710 [3]
3 years ago
7

Which of the following describes a physical property? A) gunpowder explodes B) when two substances are mixed with a precipitate

forms C) a substance change colors when heated, but changes back when cooled D) a candle burns
Chemistry
2 answers:
never [62]3 years ago
6 0

Answer is: C) a substance change colors when heated, but changes back when cooled.

Physical property can be observed and measured without any changes in molecular composition. The same substance is present before and after the change.

Gunpowder explosion, precipitate form and candle burn are chemical change (chemical reaction combustion), because new substances are formed, the atoms are rearranged and the reaction is followed by an energy change (exothermic reaction because energy is released).

ValentinkaMS [17]3 years ago
5 0
The correct answer is C) A substance changes color when heated, but changes back when cooled. Hope this helps.
You might be interested in
The reaction converting glycerol to glycerol-3-phosphate can be represented as: glycerol + hpo42− ⟶ glycerol-3-phosphate + h2o.
Volgvan

Answer;

Yes; this reaction be spontaneous if coupled with the hydrolysis of ATP.

Explanation;

The reaction converting glycerol to glycerol-3-phosphate (energetically unfavorable) can be coupled with the conversion of ATP to ADP (energetically favorable):

Glycerol + HPO42 ⟶glycerol-3-phosphate+H2O

ATP + H2O⟶ ADP + HPO42− + H+

6 0
3 years ago
Read 2 more answers
I could really use some help with this question, thank you in advance!​
Taya2010 [7]
C because
Explanation Plato
6 0
2 years ago
Why do atomic model has changed over time
Elenna [48]

The model of the atom has dramatically changed over many many years.We learned atoms make up different substances and are the smallest particles of matter, which have subatomic particles that are very small portions of matter. At first scientist only thought there were electrons which are negatively charged.

8 0
3 years ago
Which of these factors will cause a solid solute to dissolve faster?
Nostrana [21]
I believe the answer you are looking for is the 4th one.
8 0
3 years ago
Read 2 more answers
How does changing the pressure affect the chemical reaction?
olasank [31]
A is the answer
Hope it helps :)
6 0
3 years ago
Other questions:
  • How many electrons does an atom have
    9·1 answer
  • The first periodic table was organized according to atomic mass, but the current periodic table is arranged according to atomic
    11·1 answer
  • Calculate the number of grams of sodium chloride in the solution. (Hint: Remember that sodium chloride is a strong electrolyte.)
    9·1 answer
  • Ethanol boils at 78.4 °C with \DeltaΔHvap = 38.6 kJ/mol. A 0.200-mol sample of ethanol is heated from some colder temperature up
    11·1 answer
  • The electrical wires in your home use what type of circuits?
    6·2 answers
  • 9. Write the number in place value table of 820245<br>​
    10·1 answer
  • If a mixture contains 75% of one compound and 25% of its enantiomer, what is the e.e. of the mixture
    7·1 answer
  • 10 points
    8·1 answer
  • What is an empirical formula
    12·1 answer
  • A hereditary mutation is one that is unique to the individual organism?<br> True or false
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!