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
lord [1]
3 years ago
5

Two states of matter are described below. State X: Particles are ions that are far apart State Y: Particles are molecules that a

re far apart Which combination of the state and a substance in that state is correct? State X = lightning; State Y = air State X = oxygen; State Y = neon State X = oxygen; State Y = water State X = air; State Y = milk
Ben wrote the following examples of changes in substances.

Example A: Vegetables are chopped.
Example B: Food is broken up into simpler form during digestion.

Which statement is correct?

Both are examples of physical changes.
Both are examples of chemical changes.
Example A describes a physical change and Example B describes a chemical change.
Example A describes a chemical change and Example B describes a physical change.
Chemistry
1 answer:
Temka [501]3 years ago
5 0

Answer 1 : State X is lightening and state Y is air.

Explanation:

Lightening is a phenomena which occurs due to electrostatic interaction between negatively charged ions and positively charged ions present in atmosphere.

Air is composed of various molecules of gases.

Answer 2: Third statement is correct.

Explanation:

When the vegetables are chopped change in shape of the vegetables that is physical change takes place.

When food is broken down into simpler form during digestion, chemical change takes place. During digestions the chemical composition of food changes as it was broken down into simpler molecules.

You might be interested in
G Calculate the mass, in grams, of 225.0 atoms of cadmium, Cd (1 mol of Cd has a mass of 112.41 g).
serious [3.7K]
Please please thank you lord lord thank
3 0
2 years ago
What is an atomic mass unti
Vlada [557]

Explanation:

a unit of mass used to express atomic and molecular weights, equal to one twelfth of the mass of an atom of carbon-12.

3 0
3 years ago
Read 2 more answers
How many molecules of ammonia are contained in 10.4 moles of ammonia, NH3?
seraphim [82]
Avogadro's number represents the number of units in one mole of any substance. This has the value of 6.022 x 10^23 units / mole. This number can be used to convert the number of atoms or molecules into number of moles. We do as follows:

10 mol NH3 ( 6.022 x 10^23 molecules / 1 mol ) = 6.022x10^24 molecules NH3
4 0
3 years ago
When calcium chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted? the o
Lesechka [4]
Ca ionises into Ca^2+. Ca^2+ will be attracted to O^2- ions in the water, since opposite charges attract. (Hydrogen in water forms H^+)
6 0
3 years ago
The pH of a solution can be calculated from which of the following expressions?
nordsb [41]

Answer:

(c) pH = -log [H^+]

Explanation:

pH defines the acidicity or basicity a solution.

pH also refers to hydrogen ion concentration and it is only applied to aqueous solution.

pH ranges from 0 to 14. A pH of 7 is neutral and a pH less than 7 is acidic while a pH higher than basic.

4 0
3 years ago
Other questions:
  • Which statement most accurately describes the behavior of a catalyst?
    14·1 answer
  • Potassium hydroxide is used to precipitate each of the cations from their respective solution. determine the minimum concentrati
    15·1 answer
  • If 5.400 g of c6h6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °c, what is the final temp
    5·2 answers
  • A sample of gas occupies 33 mL at -101 degrees Celsius. What volume does the sample occupy at 97degrees celsius? Plz help I have
    8·1 answer
  • Both algae and amoeba are in the domain Eukarya. Which of the following characteristics do they most likely share?
    10·1 answer
  • The radio station z107.7 broadcasts radio waves. What do the numbers 107.7 represent?
    6·2 answers
  • The half-life of C-14 is 5470 years. If a particular archaeological sample has one-quarter of its original radioactivity remaini
    11·1 answer
  • What is the metric prefix for the factor 10^-9?
    13·1 answer
  • What is the volume of gas at a temperature of 200.0 K if its original volume was
    14·1 answer
  • What type of reaction occurred in the reaction between hydrochloric acid and alcohol?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!