Chemistry Middle School

Identify the form of energy.



mechanical energy


chemical energy


radiant energy


electrical energy

Identify The Form Of Energy.mechanical Energychemical Energyradiant Energyelectrical Energy

Answers

Answer 1

Answer:

Mechanical energy

Explanation:

Your body is doing most of the work

Answer 2
Mechanical Energy

Explanation: The man’s leg is pushing down on the peddles (mechanical energy means to put something else in motion)

Related Questions

A dog whistle has a high frequency. What can you infer about the dog whistle?

It would be very loud.

It would have a high pitch.

It would have a high amplitude.

It would have a long wavelength.

Answers

Answer: It would have a high pitch.

Explanation: since the whistle has a high frequency, I can infer that it will have a high pitch.

Answer:

it would have a high pitch

Explanation:

like if u take a hearing test the sounds are usually high pitch

Pls, Help! 35 Points!
How can geothermal energy be used?

A fuel vehicles
B capture solar power
C power hybrid vehicles
D generate electricity

Answers

Answer:

generating electricity hope this helps have a nice day ;)

Explanation:

Answer:

d

Explanation:

1) Would a person's weight on Earth be the same as it would be on the moon? Explain using the key words weight, mass & gravity.

Answers

Answer:

The force gravity exerts on a person determines the person's weight. Even though your mass would be the same on Earth and the moon, if you weigh 132 pounds (60 kilograms) on Earth, you would weigh about 22 pounds (10 kilograms) on the moon.

Explanation:

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Which option correctly describes the pattern of valence electrons on the periodic table?

O The number of valence electrons increases from right to left
O The number of valence electrons increases from bottom to top.
O The number of valence electrons increases from top to bottom
O The number of valence electrons increases from left to right.

Answers

Answer:

O The number of valence electrons increases from left to right.

Explanation:

In general, the number of valence electrons is the same within a column/group. When the group number increases, the # of valence electrons also increases.

The option correctly describes the pattern of valence electrons on the periodic table is the number of valence electrons increases from left to right. Thus, option D is correct.

What is atomic mass?

In universe every particle have some mass associated with it whether it is small or large. According to Dalton's theory of atomic structure every particle is made up of with atoms. The average mass of atomic particle is called as atomic mass. This is commonly calculated as per international agreement in terms of a unified atomic mass (amu).

It can also be defined as 1/12  of the mass of a carbon atom-12 in its ground state. The mass of atom can also be calculated as the mass of protons and neutrons which almost equal to atomic mass. This small change is due to the binding energy mass loss.

Calculation:-

As per given above question:-

99% H-1

0.8% H-2

0.2% H-3

So,

Atomic mass = (99x1 + 0.8x2 + 0.2x3)÷100%

Atomic mass = 1 amu,

Therefore, The option correctly describes the pattern of valence electrons on the periodic table is the number of valence electrons increases from left to right. Thus, option D is correct.

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What is the basic building block of all pure substances that make up matter in the world? A. atoms B. cells C. compounds

Answers

Answer:

a) Atoms

Explanation:

pls help me with this pls don't just come to my question with out answering the questions

Answers

A pitch is a loud noise
A pitch is a very high sound/noise

think about the statement "every decision has an environmental impact"?what decision do you make that add carbon dioxide to the environment?what decision do you make that would add less carbon dioxide to the environment then you currently add?

Answers

Explanation:

Certain actions and/or their method can affect the environment, such as leaving the sink on while brushing your teeth or not turning off a light when you leave the room. I personally make decisions to prevent my association with Greenhouse gases by turning off lights when I leave a room, using minimal water, recycling, etc.

Answer:

Answers may vary. View explanation.

Explanation:

There are every day decisions that may add carbon dioxide to the environment.  

Problems:

Burning of fossils fuels.  Example: Using cars as transportation. The average car releases around 4.6 metric tons of carbon dioxide per year.Deforestation. Carbon dioxide is released from dead organisms such as trees. Example: As of 2021, 15 billion trees are lost to deforestation.

Solutions:

Instead of taking your car to work or school, carpool with a friend. Riding your bike and taking the bus are also good solutions that help minimize carbon dioxide releases.In spare your time, grab a couple of friends and plant some trees! Even planting just a few trees is a great start to help the planet.

Have a great day!

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Answers

Answer:

Atomic number = 42

Chemical symbol = Mo

Number of protons = 42

Atomic mass = 96

Number of electrons = 42

Number of valence electrons = 1

number of electrons in n=3 shell = 8

Number of neutrons = 54

hope this helps :)

What are the 3 properties of metals?

Answers

Answer:

lustrous durable highly malleable

Explanation:

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High melting points
High density
Good conductor of heat and electricity

How do planets with larger masses apply greater gravitational forces on objects compared to planets with less mass?

⇒ Please answer in your own words

Answers

Answer:

it's bigger

Explanation:

it's bigger than the planet with less mass

Answer:

bigger.

because the bigger the plant is the less mass it has .

hope this helped you

How is your eardrum similar to a real drum?
It vibrates.
It is unpredictable.
It produces sound.
It is hollow.

Answers

Answer:

it vibrates

Explanation:

drums vibrates to make noise, and ear drums vibrate from sound.

Answer:

it vibrates

Explanation:

i took this quiz

Which of the following describes a mixture?

a. formed from two or more substances chemically combined

b. can be separated only by chemical means

c. made up of two or more substances that keep their identities

d. made up of two or more substances joined in a specific ratio

Answers

The correct answer is C. Explanation: a mixture is the physical combination of two or more substances who’s identities are retained. Therefore, c is correct.
the correct answer would be C!

what is the acceleration of 1 m/s?

Answers

Answer:

Newton es la fuerza que provoca una aceleración de 1 m/s2 en un cuerpo de 1 kg. La segunda ley de Newton establece que la fuerza y la aceleración son directamente proporcionales, pero no hay que olvidar el efecto de la masa.

Explanation:

You are asked to determine the identity of an unknown liquid and can only measure one physical property. You freeze the liquid and record that the liquid turns into a solid at 0 degrees C. Which physical property does this demonstrate?

melting point

boiling point

freezing point

volume

Answers

It demonstrates the freezing point of the liquid. Hope this helps
freezing point since it turns solid at 0 degrees

A rock is taken from the Moon back to Earth. Which of the following correctly
describes the changes to its mass and weight?

a. Its mass has no change, and its weight decreases.

b. Its mass has no change, and its weight increases.

c. Its mass decreases, and its weight has no change.

d. Its mass increases, and its weight increases

Answers

The answer is B. The mass stays the same, but because of the Earth being more gravity, the weight changes

The mass of the rock remains unchanged, and its weight increases.

What is Weight ?

Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -

W = m x g

where -

m is the mass of object

g is acceleration due to gravity

Given is a rock is taken from the Moon back to Earth.

Mass and weight are completely different from each other. Mass is the amount of matter present inside the body whereas weight is the force exerted by earth on any object on its surface. Mathematically -

W = mass x acceleration due to gravity

W = Mg

The ratio of Weight to mass is [g] (9.8).

W/M = g

Mass of a body remains constant throughout the universe but its weight depends upon the value of acceleration due to gravity of the environment of the planet or any other celestial body in which it exists. Hence, because of this only, the mass of rock remains same but its weight increases as it is brought back to earth since the acceleration due to gravity on earth is greater than that on moon.

Therefore, the mass of the rock remains unchanged, and its weight increases.

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The atomic number of an element:
Question 2 options:

Tells you the mass of the atom

Tells you the number of energy levels there are around the atom

Tells you the identity of the atom

Tells you how many valence electrons the atom has

Answers

The answer would be C, it tells you the identity of the atom.

1
Which of the following describes compounds?

a. are composed of two or more elements that are chemically combined

b. are random combinations of elements

c. are composed of elements that join in a specific ratio according to their masses

d. have the same characteristic properties as the elements that form them

Answers

Answer:

A

Explanation: The definition of a compound is two elements chemically connected

What kind of spider has red legs & a black body? I just saw this kind of spider past by my window-

Answers

The spider that you saw was a black widow

Answer:

red legged purseweb spider

Explanation:

Will not cause death but still stay away if you are sensative to all spiders.

Jim thinks that he can throw a baseball six meters per second. What does the six meters refer to? (2 points)

a
The speed the baseball travels in six seconds.

b
The distance the baseball travels in one second.

c
The distance the baseball travels in six seconds.

d
The time it takes the baseball to travel one meter.

Answers

The answer is b. hope this helps
the answer is b (the distance the baseball travels in one second)

How large is a typical animal or plant cell? A. 1-100 millimeters B. 1 meter C. 10-100 nanometers D. 10-100 micrometers WILL MARK BRAINLEST Science

Answers

D.) 10-100 micrometers

Answer:

10-100 micrometers

Explanation:

PLS ANSWER ASAP

Global winds affect weather patterns around the world. What are the names of the three types of global winds shown in the diagram?


A) A are polar easterly winds B are trade winds, and C are gulf winds.

B) A are north winds, B are prevailing westerly winds, and C are polar easterly winds.

C) A are north winds, B are west winds, and C are east winds.

D) A are polar easterly winds, B are prevailing westerly winds, and C are trade winds.

Answers

The answer is c this is the answer

Answer:

answer is C!!

Explanation:



When this candle is burned it seems to disappear over a period of time. In actuality, the candle is being converted to smoke,ash, and carbon dioxide, and the energy is being released as heat and light. This is an example of _____________.
A. Murphy's law


B. the law of conservation of mass


C. the law of chemical reactions


D. the law of nature

Answers

the answer is D the law of nature
Most likely C because the chemicals are interacting putting out the flame

Use the information and data from the tests to make a recommendation for which blanket the government should choose. In your response include scientific reasoning to support your recommendation.
Reasoning: Explain using scientific principles and connect the test results to the criteria and constraints.

Answers

Answer:

through the day yesterday and I was really hoping to see you and

How do planets with larger masses apply greater gravitational forces on objects compared to planets with less mass?

Answers

Answer:

more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

Since the gravitational force is directly proportional to the mass of both interacting objects, more massive objects will attract each other with a greater gravitational force. So as the mass of either object increases, the force of gravitational attraction between them also increases.

Can you make some notes related to these texts?

Answers

Answer

Explanation:

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Picture #1:
• Acceleration: change in velocity compared with the time it takes to change
- Average Acceleration: (Final Velocity - Starting Velocity) / Time
• Velocity: expressed in meters per seconds (m/s)
• Time: expressed in seconds (s)
• Acceleration is measured in meters per second per second
- meters per second squared (m/s²)

Picture #2:
• Acceleration is a vector
- magnitude
- direction
• Acceleration: increases and decreases in speed
• Positive Acceleration: increase in speed
- sliding down from a hill
- small velocity -> large velocity
• Negative Acceleration: decrease in speed
- car slowing then
- high velocity -> low velocity
- initial velocity is larger than final velocity
- (v2 - v1) will be negative
- acceleration “a = (v2 - v1) / t” will be negative
• Acceleration and velocity (rate of motion) in the same direction = speed will increase.
• Acceleration and velocity in opposing directions = speed will decrease

Picture #3:
• Acceleration: rate at which velocity changes
• Velocity is a vector: has magnitude & direction
- magnitude or direction changes = the velocity changes
• Object accelerates speed = direction of motion or both magnitude and direction changes
• Acceleration depends on amount of time for the change to take place and how much velocity changes
- Small change in velocity can be a large change in acceleration if the change occurred quickly.
- Large change in velocity can be a small change in acceleration if the change occurred slowly.
- Increasing speed by 5 m/s in 5 seconds is smaller acceleration to increase speed by 5 m/s in 1 second.

Picture #4:
• An object changing the direction of motion experiences acceleration even when not speeding up or slowing down
• An object is always turning.
• Centripetal Acceleration: acceleration in circular mode.
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