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
wlad13 [49]
3 years ago
15

Which statements below are an appropriate hypothesis in response to this question? Check all that apply. If a substance changes

state of matter (e.g., liquid to gas), then this is a physical change because the original properties of the substance have not changed. If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed. If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed. If a precipitate is formed when two substances are mixed, then a chemical change has taken place because precipitates are new substances.
Chemistry
2 answers:
Nostrana [21]3 years ago
6 0

Answer:

If a substance undergoes a physical change, then it will retain most of its original properties because no new substance is formed.

If a substance undergoes a chemical change, then it will not retain its original properties because a new substance is formed.

Explanation:

So in shorter words its options 2 and 3

Fofino [41]3 years ago
6 0

Answer: 2 and 3 are correct

Explanation:

You might be interested in
What is the role of the greenhouse gases in the atmosphere?
Karolina [17]

Answer:

greenhouse effects are molecules that trap heat on earth atmosphere

7 0
3 years ago
Read 2 more answers
Determine whether each of the molecules below is polar or nonpolar. Tetrahedral C C l 4 CClX4 Nonpolar Tetrahedral C H 3 O H CHX
liraira [26]

Answer:

CCl4 - Nonpolar

CH3OH - polar

NH3 - polar

CS2 - Nonpolar

Explanation:

One important thing that we should know is that polarity has to do with the presence of a resultant dipole moment in a molecule.

Dipole moment is a vector quantity, This means that its direction is also taken into account when discussing the dipole moment of molecules.

Hence, symmetrical molecules such as CS2 and CCl4 are non-polar even though they have polar bonds because their dipoles cancel out(zero resultant dipole moment).

On the other hand, NH3 and CH3OH are non-symmetrical molecules hence they possess an overall dipole moment and are polar molecules.

3 0
3 years ago
How are you guys today? o.0
Lady_Fox [76]

Answer:

not the best but that is alright

Explanation:

how is your day :)

3 0
2 years ago
Read 2 more answers
Which climate condition will cause the fastest chemical weathering of granite sandstone and shale
Naily [24]

Answer:

1. Tropical Climate

Explanation:

Due to the high heat in tropical climates, the moisture speeds up chemical weathering

6 0
3 years ago
Read 2 more answers
What is the cell potential for the reaction mg(s+fe2+(aq?mg2+(aq+fe(s at 77 ?c when [fe2+]= 3.40 m and [mg2+]= 0.210 m . express
Galina-37 [17]
First, you need to calculate the standard cell potential using standard reduction potential from a textbook or online. Since Mg becomes Mg+2, magnesium is being oxidized because it is losing electrons, you need to flip its potential

Fe+2 + 2e- --> Fe                  potential= -0.44
Mg+2 + 2e- --> Mg                potential= -2.37


Cell potential= (-0.44) + (+2.37)= 1.93 V

Now, you need to use Nernst formula to get the answer. I have attached a PDF with the work.
Download pdf
8 0
3 years ago
Other questions:
  • Which difection do most weather systems move in the united states
    12·2 answers
  • In a molecule of PCl3, 6 electrons will form
    9·1 answer
  • A 25.0 g block of a metal alloy at 100 C is dropped into an insulated flask containing 110 g of ice; 5.30 g of the ice melted. W
    12·1 answer
  • If 2.112g of Fe2O3 reacts with 0.687g of Al, how much pure Fe will be produced?
    9·1 answer
  • What is 2\5 please let me know what the answer​
    9·1 answer
  • Which of these is not a potential use for stem cell therapy?
    14·1 answer
  • What did the scientists have to consider before releasing the dragonflies into the wild? Why?
    12·2 answers
  • Why does mantle rock begin to sink back towards the lower mantle from the area closest to the crust?
    6·1 answer
  • If oxygen has a molar mass of 16.0 g/mole, carbon has a molar mass of 12.0 g/mole and hydrogen has a molar mass of 1.01 g/mole,
    12·1 answer
  • Calculate each of the following quantities:
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!