When the air inside a school gets warmer (temperature increases), the molecules of air move faster and farther apart. True Or False?
Answer:
The answer is False
Explanation:
If you want a visual representation, take water. When its left at room temperature the molecules are moving but not very fast. If you bring that water to a boil, the molecules move a lot faster and get closes together. If you were to freeze that water inside a closed container you would see the water inside expand because the molecules grow further apart.
To answer the question, while the molecules do move faster, they do not move further apart.
Please help I'm confused. While preparing his garden for spring planting, Brian grabs a shovel that was left outside all winter. He notices its metal component is covered in a red substance. What question can Brian ask to determine if the red substance indicates a chemical or physical reaction?
Answer:
Was it in the ground or on the ground?
Explanation:
He should ask that because the red substance could be rust and if it was left in the ground then it wasnt left out so oxygen couldnt get at it so it
Answer:
COMPOSITION
Explanation:
The difference between a physical reaction and a chemical reaction is composition. In a chemical reaction, there is a change in the composition of the substances in question; in a physical change.
Is there any difference in the appearance, smell, or simple display of a sample of matter without a change in composition?
Which element combinations do not form compounds?
o Sodium and Chlorine
o Sodium and Hydrogen
o Sodium and Oxygen
o Chlorine and Oxygen
o Chlorine and Hydrogen
o Hydrogen and Oxygen
HELP ME PLZ- IM GONNA DIE-
1. You may not have ever heard of the Inupiat, Inuvialuit, or the Gwich'in peoples, but where can you infer that they live? Explain. *Answer in complete sentences using proper capitalization and punctuation.
2. Describe the "life cycle" pf reindeer antlers. *Answer in complete sentences using proper capitalization and punctuation.
3. is the picture
Answer:RIbs are 11
Explanation:
HELP ME PLZ HALPPP ùwú
In a mixture, _____.
atoms of the substances form molecules
chemical bonding occurs between substances
the substances are combined in a set ratio
each substance keeps its individual properties
Answer: D
atoms of the substances form molecules - this is talking about molecules
chemical bonding occurs between substances - this is talking about molecules
the substances are combined in a set ratio - this is talking about molecules
each substance keeps its individual properties - definition of mixture
Can someone help with this science question?
Answer:
i believe its c
i hope this helped
Once you add the maximum amount of solute that a solvent can dissolve, the solution is said to be: .
A______________is a material that is composed of only one type of particle; examples of a pure substance include gold, oxygen and water.
Answer:
Neurons
Explanation:
hopes this helps
You have three drinks in front of you. you know how they are made, but are unsure which one has the highest concentration of juice crystals. The first drink has 10g of juice crystals dissolved in 50mL of water. The second drink has 15g of juice crystals dissolve in 100 mL of water and the third drink has 6g of juice crystals dissolve in 25 ml of water.
make a plan to figure out the concentration of each drink. what was the most concentrated drink? How did you determine this since all three drinks had different amounts of solvent?
Answer:
Explanation:
i think the last one is correct
you have three drinks in front of you. you know how they are made, but are unsure which one has the highest concentration of juice crystals. The first drink has 10g of juice crystals dissolved in 50mL of water. The second drink has 15g of juice crystals dissolved in 25mL of water.
make a plan to figure out the concentration of each drink.
what was the most concentrated drink? How did you determine this since all three drinks had different amounts of solvent?
Answer:
The 2nd juice is more concentrated.
Explanation:
To find out the answer of this question we have to find the ratio in the juices. Such as in this case :
The 1st drink=10/50=0.2
The 2nd drink=15/25=0.6
It is quite clear to us from this ratio that the 2nd drink is more concentrated than the 1st one.
Hope that this answer helps you
the output of cellular respiration are
Help this is timed as well!!
Answer:
KE = 162 J
General Formulas and Concepts:
Chemistry/Physics
Kinetic Energy: KE = 1/2mv²Explanation:
Step 1: Define variables
m = 4 kg
v = 9 m/s
Step 2: Solve for KE
Substitute: KE = 1/2(4)(9)²Evaluate: KE = 162 JHELP THIS IS DUE IN A FEW MINUTES
Which element combination had a covalent bond that was similar to an ionic bond? Explain.
o Sodium and Chlorine
o Sodium and Hydrogen
o Sodium and Oxygen
o Chlorine and Oxygen
o Chlorine and Hydrogen
o Hydrogen and Oxygen
all of the following state reasons why water equality is important except one. which one does not apply ?
Answer:
C
Explanation:
Organisms can be harmed, the water was here when the planet formed, and the organisms that drink drinking water can be affected.
Answer:
The answer is c because Organisms can be harmed, the water was here when the planet formed, and the organisms that drink drinking water can be affected. this is why they are affected.
Explanation:
Define the two forces: gravity and the normal force