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
sergij07 [2.7K]
3 years ago
6

Hello, this is a science task and it is due today I would really appreciate it if you guys can help me answer and explain what i

s the difference between expansion and contraction:) I will mark brainliest!

Chemistry
2 answers:
labwork [276]3 years ago
8 0

The increase in size of an object on heating is called expansion where as the decrease in size of an object on cooling is called contraction.

ioda3 years ago
7 0

Answer:

Expansion: increase in size Contraction: decrease in size

Explanation:

You might be interested in
A bond formed by electrical attraction between two oppositely charged ions is called
Komok [63]
Ionic bond<span>, also </span>called<span> electrovalent </span>bond<span> , type of linkage </span>formed<span> from the electrostatic </span>attraction between oppositely charged ions<span> in a chemical compound.

</span>
8 0
3 years ago
ITS TALKING ABOUT PHOTOSYNTHESIS
Xelga [282]
The circulatory system
8 0
3 years ago
a one gram sample of hematite up more space than a one gram sample of malachite. what mineral characteristic does this refer to
Gwar [14]
I think the mineral characteristics that the one gram sample of hematite taking up more space than a one gram sample of malachite is DENSITY.

The density of hematite is 5.26 g/cm³
The density of malachite is 3.6 to 4 g/cm³

Other physical characteristics of minerals are <span><span>Color, </span>Streak, Luster, H<span>ardness, </span>Cleavage, Fracture, Tenacity, and Crystal <span>Habit.</span></span>
7 0
3 years ago
What is meant by polar molecule?
Lostsunrise [7]
A polar molecule<span> has a net dipole as a result of the opposing charges (i.e. having partial positive and partial negative charges) from </span>polar<span> bonds arranged asymmetrically. Water (H</span>2<span>O) is an example of a </span>polar molecule<span> since it has a slight positive charge on one side and a slight negative charge on the other.</span>
3 0
3 years ago
In a water molecule (H2O), the oxygen atom has two unshared pairs of electrons and two bonding pairs of electrons. How do the un
vladimir1956 [14]

Answer:

They reduce the bond angle to be slightly lower than the tetrahedral bond angle, approximately 104.45 degrees.

Explanation:

The unshared pair of electrons or lone pair electrons in order to have the minimum repulsion possible with each other pushes the other bonding pairs closer together making the bond angle smaller or bent.

The bond angle is slightly lower than the tetrahedral bond angle of 108 degrees, leaving the water molecule with a bent molecular geometry.

4 0
3 years ago
Other questions:
  • A lake that is protected from receiving the runoff from a cultivated field is likely to remain a healthy ecosystem. t or f
    13·2 answers
  • Where in a convergent boundary does rock recycling occur
    11·1 answer
  • 2.5 piece of lithium is dropped into a 500 g sample of water at 22.1 C.ten temperature of the water increases to 23.5 C. How muc
    11·1 answer
  • This type of triglyceride contains more than one double bond in the fatty acid carbon atoms
    15·1 answer
  • If the evidence you collect during experiments does not support your hypothesis, what should happen to that hypothesis.
    15·1 answer
  • For a reaction to be nonspontaneous under standard conditions at all temperatures, the signs of δh∘ and δs∘ must be ________ and
    12·1 answer
  • A substance absorbed 895 J and caused its temperature to increase by 10 ºC. If the substance has a mass of 27.9 g, what is the s
    10·2 answers
  • Explain how low atomspheric oxygen levels affected alligators growth in terms of celluar respiration
    5·1 answer
  • A solution of potassium nitrate is made when potassium nitrate dissolves in water.
    7·1 answer
  • Arrange the elements in order of increasing electronegativity. Use the periodic table to help you arrange the elements.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!