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
olasank [31]
3 years ago
5

A _____________________ change does not change what a substance is. If heat is added to ice, a physical change occurs because on

ly the _______________ of matter has changed. The term for changing a solid to a liquid is _________________. Adding more heat can turn the water into a gas, or _____________. The term for changing a liquid to a gas is __________________. Changes of state can be reversed as well. A gas turns into a liquid by _____________________. A liquid turns into a solid by ______________________. On very rare occasions, a solid turns into a gas through _____________________. The reverse is a gas turning into solid, or _________________________. ______________________ change produces a new substance because a chemical reaction has taken place. We know baking a cake is a chemical change because the flour, eggs, sugar, and other ingredients cannot be returned to their original structures. We know that a chemical change occurs when heat or ___________________ is released or absorbed, when a ______________ or bubbles form, or when a solid or ________________________ forms
Chemistry
1 answer:
sertanlavr [38]3 years ago
6 0

Answer:

<em>physical, state, melting, vapour, evaporation, condensation, freezing, sublimation, deposition or reverse sublimation, chemical, energy, effevescence and liquids</em><em> are suitable terms to fill the gaps. See the explanaition</em>

Explanation:

Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization. Thus

A <em>________physical_____________ </em>change does not change what a substance is. If heat is added to ice, a physical change occurs because only the <em>______state_________ </em>of matter has changed. The term for changing a solid to a liquid is <em>_____melting____________</em>. Adding more heat can turn the water into a gas, or <em>___vapour__________</em>. The term for changing a liquid to a gas is <em>_______evaporation___________</em>. Changes of state can be reversed as well. A gas turns into a liquid by <em>________condensation_____________</em>. A liquid turns into a solid by <em>_________freezing____________</em>. On very rare occasions, a solid turns into a gas through <em>_______sublimation______________</em>. The reverse is a gas turning into solid, or <em>_______deposition or reverse sublimation___</em>. <em>________chemical______________ </em>change produces a new substance because a chemical reaction has taken place. We know baking a cake is a chemical change because the flour, eggs, sugar, and other ingredients cannot be returned to their original structures. We know that a chemical change occurs when heat or <em>________energy___________ </em>is released or absorbed, when a <em>______effevescence________ </em>or bubbles form, or when a solid or ________<em>liquids</em>________________ forms.

Also note the following points about physical and chemical change.

  • Physical Change

Physical changes are changes in which no bonds are broken or formed. This means that the same types of compounds or elements that were there at the beginning of the change are there at the end of the change. Because the ending materials are the same as the beginning materials, the properties (such as color, boiling point, etc) will also be the same.  A physical change is a change to a sample of matter in which some properties of the material change, but the identity of the matter does not. When we heat the liquid water, it changes to water vapor. But even though the physical properties have changed, the molecules are exactly the same as before.

  • Chemical Change

Chemical changes occur when bonds are broken and/or formed between molecules or atoms. This means that one substance with a certain set of properties (such as melting point, color, taste, etc) is turned into a different substance with different properties. Chemical changes are frequently harder to reverse than physical changes.

One good example of a chemical change is burning a candle. The act of burning paper actually results in the formation of new chemicals (carbon dioxide and water).

You might be interested in
Two students were conducting an experiment. They have two blocks of different metals and wanted to identify them. They started b
erik [133]

Answer:

this dosen't make sense

5 0
3 years ago
For your 13th answer in #4, what is the other name for this particle?
solong [7]

Answer:

The First layer is the troposphere. The troposphere is what we live in. It creates weather for us. Second layer is the Stratosphere. You will find the ozone layer in it. The ozone layer helps protect us from ultraviolet radiation (UV) from the sun. In fact, the ozone layer absorbs most of the UV radiation the sun sends to us. Life as we know it wouldn't be possible without this layer of protection. Third layer is Mesosphere. The Mesosphere is very important for earth's protection. The mesosphere burns up most meteors and asteroids before they are able to reach the earth's surface. Fourth layer is Thermosphere. The Thermosphere absorbs the sun radiation making it very hot.

Explanation: I don't know if you include this one but the fifth layer is the Exosphere. Although the exosphere is the most distance layer of earth's atmosphere it is the layer that is the planet's first line of defense against the sun's rays. It is also the first layer to come into contact and protect the earth from meteors, asteroids, and cosmic rays.

8 0
3 years ago
Read 2 more answers
A gas has an initial volume of 168 cm3 at a temperature of 255 K and a pressure of 1.6 atm. The pressure of the gas decreases to
katen-ka-za [31]
I wrote the answer on this paper and here is the calculations step by step

very sry the "V" must be replaced with 285 and the 285 must be replaced with "V" and the answer is 231.09 cm3. sorry for the inconvenience.

6 0
3 years ago
Read 2 more answers
How many atoms of carbon are combined to with 2.81 moles of hydrogen atoms in a sample of the compound ethane, C2H6?
puteri [66]

Answer:

5.64×10²³ atoms C

Explanation:

Convert moles of H to moles of C:

2.81 mol H × (2 mol C / 6 mol H) = 0.937 mol C

Convert moles of C to atoms of C:

0.937 mol C × (6.02×10²³ atoms C / mol C) = 5.64×10²³ atoms C

5 0
3 years ago
The image shows two spheres hung from a thin rope. The spheres do not affect each other.
jekas [21]

Answer:

both spheres have a positive charge

8 0
2 years ago
Other questions:
  • The heat of a reaction may be found with the equation q=mcΔT. A hot pot is set on a 2.51 kg slab of granite. The temperature of
    9·2 answers
  • Which temperature represents the highest average kinetic energy of the particles in a sample of matter ?
    14·2 answers
  • Please help me i keep getting this wrong :(
    11·1 answer
  • Select the correct answer.
    5·1 answer
  • Show how the following are formed
    5·1 answer
  • Which resource is considered the LEAST renewable resource?
    13·1 answer
  • How can the difference between a covalent bond, a polar covalent bond, and an ionic bond be categorized using the concept of ele
    6·1 answer
  • Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
    11·1 answer
  • Which type of bond involves valence electrons constantly moving between atoms, like a sea of electrons?
    5·1 answer
  • What is the momentum of a 0.151 kg baseball that is thrown with a velocity of 28.0 m/s towards first base?​
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!