Answer: technically it is chemical and physical change
Explanation: chemical bc it’s burning and physical bc it’s going from a log to ashes
Answer:
C! New substances are formed.
Explanation:
The burning log will release carbon dioxide, which is a new substance that was never there in the first place.
How does the temperature of water affect its ability to hold oxygen?
Answer:The solubility of oxygen and other gases will decrease as temperature increases 9. This means that colder lakes and streams can hold more dissolved oxygen than warmer waters. If water is too warm, it will not hold enough oxygen for aquatic organisms to survive.
Explanation:
In two or more complete sentences explain how to balance the chemical equation,
Ca + N2 ⟶ Ca3 + N2 and include all steps.
Answer:
to balance this equation, your going to put a 2 in front of the "Ca" then that makes the equation look like this "2Ca + N2 ⟶ Ca3 + N2" since the "Ca" had one atom, we added two more atoms
as we all know 1 + 2 = 3
then that gives us 3 "Ca's" on both sides
hoped this help and good luck on your test! :D
Explanation:
What harmful rays does the atmosphere block?
ANSWER: UV rays from the sun.
The Ozone layer blocks those rays.
Hope this helps!
Answer: UV-C and UV-B are harmful rays the atmosphere blocks
Which of Newton's 3 Laws explains a rocket lifting off? *
Law of inertia
Law of Acceleration
Law of Action-Reaction
Answer:
Newton's Third Law of Motion
Explanation:
A rocket expels hot gases at a very high pressure very quickly, and these gases have lots of energy, and according to Newton's third law, every action has an equal and opposite reaction. So, expel lots of gas at a high rate, and the energy of the gases being pushed out propels the rocket upward. Hope that helps!
Use the terms carbon dioxide, nitrates, phosphates, sulfates, and water to complete the chart that describes the inorganic compounds that provide most of the main elements of life to plants.
Answer: hi imi i new
Explanation:
Which statement is true about heat and light energy?
A Heat and light energy always move from colder objects to warmer ones.
B Heat energy moves in many different directions and light energy moves in only one direction.
C Objects do not produce both heat energy and light energy.
D Some objects can absorb both heat energy and light energy.
Answer:C
Explanation:
Answer:
D.
Explanation:
Got it right on my test, Trust me.
Atomic theory question Rutherford’s model
Jim ran 200 meters in 30.4 seconds. Mac ran 100 meters in 30.4 seconds. Who ran faster?
Jim, because his distance divided by time is less
Jim, because he ran a greater distance in the same time
Mac, because he ran the same distance in fewer seconds
Mac, because his rate of change of distance over time was constant
Jim, because he ran a greater distance in the same time :)
By the way, this is a maths question
Which option is an example of a physical change?
iron rusting
metal denting
silver tarnishing
gasoline burning
please hurry!!!!!
Brainliest if right!
Answer: metal denting
Explanation:
a physical change is something that can be undone. while chemical changes are relatively permanent. You can reshape the metal so you know it is physical.
I need it done assap
What are some ways your body regulates the increase of body temperature that also occurs when exercising?
Answer:
Doing push-ups
Explanation:
When you workout you get hot so the tempeture of ur body increase.
Some ways by which your body regulates the increase of body temperature that also occurs when exercising are evaporation of sweat and skin blood flow.
What is effect of exercising on body temperature?
Our muscles quickly deplete stored energy when you start exercising. To make more energy, muscles combine oxygen with adenosine triphosphate or ATP. This process creates heat energy as a byproduct. Muscles generate the most heat because they produce so much energy.
Extra heat raises your body temperature, so your body needs to eliminate heat as quickly as possible.
Therefore, some ways by which your body regulates the increase of body temperature that also occurs when exercising are evaporation of sweat and skin blood flow.
Learn more about exercising, here:
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Is light energy organic or inorganic?
If ATP is in the middle which word goes first? organic or inorganic
It is organic my friend, have a good day
Explanation:
.
Answer:
1. light energy is organic
2. If ATP is in the middle, the word that goes first is organic
PLEASE HELP ME!!
What happens at the borders of major tectonic plates?
Radioactivity is very high and large amounts of uranium are found.
Earthquake and volcanic activity is evident.
The edges of plates break apart due to the crushing that occurs.
The borders are calm and free of plate movement activity.
Answer: continental crust is created and oceanic crust is destroyed.
Explanation:
Answer:
Radioactivity.
What type of energy transformation is happening?
a boy sliding his foot across the floor
A Electrical energy is created by friction when his foot slides across the floor.
B The mechanical energy of his foot moving across the floor is transformed into chemical energy.
C When his foot is sliding across the floor, it creates heat energy through friction.
D When his foot rubs against the floor, the energy of motion changes into light energy.
What is the curie used to measure?
a.amount of radiation equaling disintegrations per second
b.amount of radiation biological material absorbs
c.amount of gamma radiation needed to produce a specific number of positive or negative particles
d.amount of radiation needed to produce positive or negative particles due to gamma rays passing through one gram of air
Answer:
Explanation:
A
The shallowest part of the ocean is the
a. Continental slope
b. Continental shelf
c. Trench
d. Mid-Oceanic Ridge
c. Trench................
15 points and brainiest (if there's 2 answers)
Is the coloring of the peppered moths an example of competition, differential reproductive success, or inherited variation?
Please explain why
thank you
What is a diaphragm? What does it do?
The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.
Explanation:
Diaphragm contracts and expands when you breathe air
Answer:
A diaphragm on a microscope is the piece that enables the user to adjust the amount of light that is focused under the specimen being observed. A diaphragm is typically found on higher-power microscopes versus less expensive or toy models. The diaphragm is located directly under the stage or platform where user places the specimen or slide.
Explanation:
How many atoms are in Fe(OH)2
there's a total of five atoms
Answer:
There are 5 atoms
Explanation:
Brainliest Please
Describe the kinetic energy/ movement of the particles in plasma.
Answer:
Plasma is the highest energy state kf matter consisting of a collection of free-moving electrons, positive ions and neutral particles.
How do particals move around in plasma? plasma particles are spred our and move around randomly, but unlike gas, they contain some free ions and electrons, which gives plasma its ability to conduct electricity.
what is kinetic energy? A form energy that an object or particle by reason of motion. Dictionary def.- energy which a body possesses by virtue if being in motion.
i wasn't sure which one you needed. :)
And done! :)))))))))
Match the part of the wave to its description
Answer:
Crest Highest Point of the wave
Trough Lowest Point of the wave
Amplitude the height from mid point to the crest or trough
Wavelength Distance from one crest to another
The match of the wave is
Crest ⇒ Highest point of the wave.
Trough ⇒ Lowest point of the wave.
Amplitude ⇒ Height from mid point to the crest or trough
Wavelength ⇒ Distance from one crest to another.
What is wavelength?Wavelength the distance a wave travels in the time it takes a medium particle to complete one vibration. The letter k stands for it. The meter is its SI unit.
What is amplitude?
Amplitude can be referred to as the maximum displacement caused by the vibrating particle. A is the symbol for it. The meter is its SI unit.
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Which observation shows that a substance is malleable?
O A. The substance can be stretched easily into wires.
O B. The substance flattens out when struck with a hammer
O C. The substance breaks apart when stretched.
O D. The substance shatters when struck with a hammer.
Answer:
the answer is B
Explanation:
the definition of malleable is- able to be hammered or pressed permanently out of shape without breaking or cracking
Answer:
Explanation:
The substance flattens out when struck with a hammer. Took test.
Match the terms
1.the total energy of any closed system, including all internal kinetic and potential energy of the system
2.a measure of the average kinetic energy of particles in an object
3.something that flows into a substance
Terms-
Temperature
Heat
Thermal Energy
Answer:
1-thermal energy, 2-tempurature, 3-heat
Explanation:
The correct match of the terms and their definitions are:
1. Thermal energy – the total energy of any closed system, including all internal kinetic and potential energy of the system.
2. Temperature – a measure of the average kinetic energy of particles in an object
3. Heat – something that flows into a substance
What is thermal energy?Thermal energy is the energy that is formed by heat. It is produced when the temperature of a body increases. This cause the molecules and atoms to run or move fast or collide with each other.
Heat is a form of energy that is produced when the temperature of a substance increases. Heat, thermal energy, and temperature are interconnected to each other.
When the temperature rises, the heat or thermal energy in the body increase, which cause the movement of atoms faster, and the atoms collide with each other.
Thus, the correct match is 1- thermal energy, 2- temperature, and 3- heat.
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Which shows the correct order of steps in the formation of coal?
Layers of dead plants pile up → plant matter is buried by rocks and dirt → dead plants fall in swamp → plant matter is compressed and is exposed to heat → coal forms
Plant matter is compressed and is exposed to heat → dead plants fall in swamp → layers of dead plants pile up → plant matter is buried by rocks and dirt → coal forms
Plant matter is buried by rocks and dirt → dead plants fall in swamp → layers of dead plants pile up → plant matter is compressed and is exposed to heat → coal forms
Dead plants fall in swamp → layers of dead plants pile up → plant matter is buried by rocks and dirt → plant matter is compressed and is exposed to heat → coal forms
I WILL GIVE BRAINLIEST TO BEST ANSWER PLEASE HURRY
Answer:
-D is the corect answer.Dead plants fall in swamp → layers of dead plants pile up → plant matter is buried by rocks and dirt → plant matter is compressed and is exposed to heat → coal forms
How many atoms are in Al2(SO4)3
Answer:
here are two aluminum ions and three sulfate ions; or two aluminum, three sulfur, and twelve oxygen atoms.
answer this please sooo
How does the amount of water in a glass affect the pitch of the sound it produces?
Answer:
the more water the higher the pitch the less water the lower it is
Answer:
The glass with the most water has the lowest pitch. The glass with the least amount of water has the highest pitch.
Explanation:Tapping the glasses causes the air to vibrate. When the air column is shorter, the air vibrates faster and the pitch is higher.
Write a statement that best compares the rotation of a gaseous planet (Jupiter, Saturn, Uranus, Neptune) to the rotation of a rocky planet (Mercury, Venus, Earth, Mars)?
There are many sizes and colors of stars. Which of the following BEST describes the category in which the Sun would be placed?
Select one:
a. blue supergiant stars
b. red giant stars
c. yellow main sequence stars
d. white dwarf stars
Answer: The Sun is a yellow main sequence star
Explanation: