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
Cerrena [4.2K]
3 years ago
14

Science 7 Grade 7. Can anyone please help me answer these science questions?

Chemistry
2 answers:
masha68 [24]3 years ago
6 0
A cellphone battery is a electrical energy 
and a piston in an engine is an thermal energy
NARA [144]3 years ago
4 0
<span>Thermal expansion in a balloon occurs because when the balloon is heated up, the gas molecules will move faster and in greater distance so when if they move faster then they will hit the wall with greater force, will result to expansion.

conduction, convection and radiation are the ways that thermal energy is transferred.

a cellphone battery is an electrical energy, then piston in an engine is mechanical energy </span>
You might be interested in
If a flame is yellow is it considered dirty or clean?And to make it blue do you add or take away air?
Step2247 [10]
It is clean and is blue when you take away air hope i helped.
8 0
3 years ago
Which of the following is not the same as 2.97 milligrams?
Len [333]
Hi There!!!!!!

Which of the following is not the same as 2.97 milligrams?A)0.297 cg
B)0.00297 g
C) 0.0000297 KG

Answer:0.00297 g

5 0
3 years ago
Read 2 more answers
The density of an alcohol is 0.788 g/mL. What volume in microliters, μL, will correspond to a mass of 20.500 mg?
PIT_PIT [208]

Answer:10.500

Explanation:

Because u subtract

7 0
4 years ago
The number of moles of solute in 200.ml of a 0.500 m solution is
IrinaK [193]

Answer:

I believe the answer is 0.100.

Explanation:

Hope my answer has helped you!

8 0
3 years ago
Private land is generally used for _______. a. homes b. businesses c. factories d. all of the above Please select the best answe
alekssr [168]

HM, I think the answer would be D. This is just a guess, so please use it if ou want to answer D it's ok :D

5 0
3 years ago
Read 2 more answers
Other questions:
  • When ammonium nitrate is added to a suspension of magnesium hydroxide in water, the Mg(OH)2 dissolves. Write a net ionic equatio
    10·1 answer
  • Consider the following reaction: . SO2Cl2(g)⇌SO2(g)+Cl2(g) . A reaction mixture is made containing an initial [SO2Cl2] of 2.2×10
    13·2 answers
  • What is not a guideline required for a valid evidence test?
    5·1 answer
  • A bond between H and o
    15·1 answer
  • What does the stonefish eat
    11·1 answer
  • Which of these metals reacts more vigorously with water? <br><br> 1. Zinc <br> 2. Magnesium
    15·1 answer
  • Determine whether each phrase describes carboxylic acids or esters.
    12·1 answer
  • Define the chemical reaction?​
    7·2 answers
  • What is the mass of 2.071x10^14 molecules of SF2
    5·1 answer
  • You have a balloon filled with hellum that has a volume of 4.91 cubic decimeters
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!