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
Igoryamba
3 years ago
14

A substance undergoes a change. Which of the following indicates that the change was a chemical change? The substance changed sh

ape. New molecules formed. The substance froze. The substance changed size.
Chemistry
2 answers:
irina1246 [14]3 years ago
8 0

Answer: New molecules formed.

Explanation:

A physical change is defined as the change in which shape, size will be altered. No new substance gets formed in these reactions.

A chemical change is defined as the change in which chemical composition is altered. A new substance is formed in these reactions.

The substance changed shape is a physical change.

The substance froze means the state is changed and is a physical change.

The substance changed size is a physical change.

Thus when new molecules are formed, it is a chemical change.

MariettaO [177]3 years ago
3 0
In order to form new molecules, a chemical reaction would have to occur which means the change would be a chemical change.
You might be interested in
Two___ of the element sodium combine with one___ of the element chlorine to form the ___ sodium chloride
Evgen [1.6K]

Answer:

third, fourth

Explanation:

7 0
3 years ago
When 20 grams of KCIO3, is dissolved in 100 grams of water, the solution can be
tia_tia [17]

Answer:

b. unsaturated .

Explanation:

Hello there!

In this case, according to the given information, it turns out necessary for us to bear to mind the definition of each type of solution:

- Supersaturated solution: comprises a large amount of solute at a temperature at which it will be able to crystalize upon standing.

- Unsaturated solution: is a solution in which a solvent is able to dissolve any more solute at a given temperature.

- Saturated solution can be defined as a solution in which a solvent is not capable of dissolving any more solute at a given temperature.

In such a way, since 20 grams of the solute are less than the solubility, we infer this is b. unsaturated, as 33.3 grams of solute can be further added to the 100 grams of water.

Regards!

6 0
3 years ago
What is the volume of the rectangular prism below? A.38,832 mm3 B.480,000 mm3 C.499,200 mm3 D.501,120 mm3
Mkey [24]

Answer:

c.

Explanation:

8 0
3 years ago
What type of grass is poisioness
ikadub [295]

Answer: Tall fescue can be harmful to grazing cattle and horses because the grass can become tough and infected with endophytes, causing poor grazing. Switchgrass and tall fescue are less likely to be poisonous to dogs, cats or humans than to horses or cattle, but eating either of them might cause stomach upset.

Explanation:

5 0
3 years ago
Read 2 more answers
How many nitrogen atoms are represented in 2Ca(NO3)2?
arsen [322]

Explanation:

there is 2 nitrogen but if you mean nitrate is 6

4 0
3 years ago
Other questions:
  • What two types of energy does our bodies have while riding a bike
    6·2 answers
  • 1. Excision dermoid cyst of the nose, complex.
    12·1 answer
  • What are the roles of a decomposer?
    5·1 answer
  • The element californium (cf) sells for $1000 per µg. assuming 6.02 x 1023 atoms of cf have a mass of 251 grams, how many atoms o
    7·1 answer
  • Which of these is not an example of a velocity?
    7·1 answer
  • How is heat energy transferred if it has direct contact between a warm object and a cold object?
    13·1 answer
  • BRAINLIESTTT ASAP! PLEASE ANSWER IN YOUR OWN WORDS. :)
    10·1 answer
  • Write the correct IUPAC name for each of the following structures (3 marks per
    14·1 answer
  • Which of the following is not a required characteristic for a living organism?
    10·2 answers
  • The molecular mass of air, at standard pressure and temperature, is approximately 28.97 g/mol. Calculate the mass of 3.33 moles
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!