What is an element and comepounds

Answers

Answer 1
An ELEMENT is a material that consists of a single type of atom. Each atom type contains the same number of protons. Chemical bonds link elements together to form more complex molecules called compounds. A COMPOUND consists of two or more types of elements held together by covalent or ionic bonds.
Answer 2

Answer:

Explanation:

Element: consists of only one kind of atom, can't be broken down into a simple type of matter by either physical or chemical means and can consist as either atoms or molecules

Compound: consists of atoms of two or more different elements bound together, can be broken down into simpler types of matter by chemical means BUT not by physical means, has properties that are different from its component elements and always contain the same ratio of its component atoms.


Related Questions

During exercise, the supply of oxygen and __________ to muscles increases. What one word completes the sentence?

Answers

Answer:

Glucose

Explanation:

During exercise, muscles need more energy. They get this energy by aerobic respiration, which uses oxygen and glucose to release energy.

Note: If the body fails to supply oxygen to the muscles fast enough, the muscles will produce energy by anaerobic respiration, which is not as effective as aerobic respiration in addition to producing lactic acid.

During exercise, the supply of oxygen and glucose to muscles increases. During exercise, muscles need more energy.

What happens during exercise?

They get this energy by high-impact breath, which utilizes oxygen and glucose to deliver energy.

During exercise, your muscles are working diligently. Your breathing and pulse increment, maneuvering more oxygen into the circulation system. As you work out, the oxygen that arrives at your muscles changes over accessible glucose into ATP, furnishing your body with the energy it requires to finish your exercise.

Find more information about Exercise here:

brainly.com/question/3524635

Select all that apply.

Which of the following is a valid reason why females are underrepresented in STEM jobs?

Females like technology and science, but they are not confident in their mathematics abilities.
Females are more likely to pursue STEM education in societies where females have STEM jobs.
Females like to study STEM subjects, but they do not want to work in STEM jobs.
Females are not as competent as males in mathematics, science, and technology.

Answers

Answer:

Its most likely answer number 2

Answer:

Females like technology and science, but they are not confident in their mathematics abilities.

and

Females are more likely to pursue STEM education in societies where females have STEM jobs.

Im doing this assignment right now

Fiber is not easily digested by the body.

True
False

Answers

Answer:

true

Explanation:

Answer:

Is Falseeee

Explanation:

Hope it helps

An object with a mass of 5kg accelerates 20m/s" when an unknown force is applied. What is the amount of force?

please help!!

Answers

Answer:

100 N

Explanation:

The force acting on an object given it's mass and acceleration can be found by using the formula

force = mass × acceleration

From the question we have

force = 5 × 20

We have the final answer as

100 N

Hope this helps you

THIS IS DUE TOMORROW! WILL GIVE BRAINLIEST!!
6. How does sea-floor spreading explain why the youngest rocks are found near the mid-Atlantic ridge?​

Answers

Answer:

With distance from the ridge crest, the sediments and crust get thicker. This also supports the idea that the youngest rocks are on the ridge axis and that the rocks get older with distance away from the ridge (Figure below). Something causes the seafloor to be created at the ridge crest.

Answer: With distance from the ridge crest, the sediments and crust get thicker. This also supports the idea that the youngest rocks are on the ridge axis and that the rocks get older with distance away from the ridge (Figure below). Something causes the seafloor to be created at the ridge crest

Explanation:

New rock is formed near the mid-oceanic ridge as oceanic plates diverge or separate from each other. Hot rocks rising from the asthenosphere melt from decompression as they rise, filling the fault and forming new basaltic oceanic crust. As new crust is added, older crust is pushed away. Therefore, the further away from the mid-oceanic ridge, the older the rocks.

PLS HURRY Give two ways that citizens can influence the technology that affects
them. *

Answers

Answer:

They can use it to help them get a job, for example, tech typically have apps to help aid the citizen.

They can use their technology to try and make their life style easier for example, Google Home.

A beach ball, moving with a velocity of 2 m/s, rolls off a pier and hits the water 0.5 m from the end of the pier. It strikes the water 0.25 seconds later. How high is the pier above the water? Disregard air resistance. 1.23 m 0.31 m 0.61 m 2.45 m

Answers

Answer:

0.31 m

Explanation:

The following data were obtained from the question:

Horizontal distance (s) = 0.5 m

Horizontal velocity (u) = 2 m/s

Time (t) = 0.25 s

Height (h) of the pier =.?

The height of the pier can be obtained as illustrated below:

Time (t) = 0.25 s

Acceleration due to gravity (g) = 9.8 m/s²

Height (h) of the pier =.?

h = ½gt²

h = ½ × 9.8 × 0.25²

h = 4.9 × 0.0625

h = 0.31 m

The, the height of the pier is 0.31 m

A rocket initially at rest on the ground lifts off vertically with a constant acceleration of 20m/s^2. How long will it take the rocket to reach an altitude of 16km

Answers

16 km = 1/2 (20 m/s²) t ²

t ² = (32 km) / (20 m/s²)

t ² = (32,000 m) / (20 m/s²)

t = √(1600 s²)

t = 40 s

pls help i’m begging you

Answers

Answer:

true,true,false,true

Explanation:

Near Earth's surface, the acceleration due to gravity is __________ and directed __________.

Answers

Answer:

gravity can help us walk

Explanation:

i know cuz we are able to walk

If there was a ball falling from a tree and there was a guy under the tree, the balls was falling 12 mph and the guy under the tree has 2 seconds to escape. Did the ball land in his head or did he dodge it?

Answers

Answer:

He dodged it.

Explanation:

It was going 12 miles per hour and he noticed it, but he had 2 seconds left to dodge it, if the ball is falling 12 mph then the tree is pretty big and he had enough time to escape, so yes he did dodge it.

I am unsure about what I'm suppose to do

Answers

Answer:

1st box: increase

supporting evidence: As the girl swings downward she will gain more height due to the increasing force pushing her

2nd box: increase

supporting evidence: the magnetic force of the earth will increase the kinetic energy of the girl when she goes downward slightly as she swings forward

3rd box :increase

supporting evidence:As the girl swings downward she will gain more speed due to the gravitational pull

Explanation:

Calculate how much steam from water boiling at 100 C will just melt 50 gm of wax at 20 C. (Melting point of wax=55 C, sp. heat capacity of wax=0.7cal/g C, sp. latent heat of fusion of wax=35cal/g)​

Answers

Answer:

m₁ = 5.507 x 10⁻³ kg = 5.507 g

Explanation:

The heat released by the steam must be absorbed by the melting wax, according to the law of conservation of energy:

Heat Released by Steam = Heat Absorbed by Wax

Latent Heat of Fusion of Steam = Heat Absorbed by Wax + Latent Heat of Fusion of Wax

m₁H₁ = m₂CΔT₂ + m₂H₂

where,

m₁ = mass of water = ?

H₁ = Latent Heat of Fusion of Water = 2260 KJ/kg = 2.26 x 10⁶ J/kg

m₂ = mass of wax = 50 g = 0.05 kg

C = specific heat capacity of wax = (0.7 cal/g°C)(1000 g/1 kg)(4.184 J/1 Cal)

C = 2928.8 J/kg.°C

ΔT₂ = Change in Temperature of Wax = 55°C - 20°C = 35°C

H₂ = Latent Heat of Fusion of Wax = (35 cal/g)(1000 g/1 kg)(4.184 J/1 Cal)

H₂ = 146440 J/kg

Therefore,

m₁(2.26 x 10⁶ J/kg) = (0.05 kg)(2928.8 J/kg.°C)(35°C) + (0.05 kg)(146440 J/kg)

m₁ = (5125.4 J + 7322 J)/2.26 x 10⁶ J/kg

m₁ = 5.507 x 10⁻³ kg = 5.507 g

The purpose of concept-mapping is to
a. Identify sequence
b. Identify vocabulary
c. Identify relationships
d. Identify questions
Please select the best answer from the choices provided
Ο Α
OB
ОС
OD

Answers

Answer:

c. Identify relationships

Explanation:

One of the most important feature of concept-mapping is to identify relationships between the phenomenon being mapped.

Concept map is the process of using shapes, colors and lines to represent a person's thought process. Concept maps are very useful study aids. They present the relationship between different part of a study.

Answer:

its a... i have seen one for every letter lol

Explanation:

A toy car is tied to a post with string, causing it to drive in a tight circle. This is
shown in the picture below.
In which direction will the toy car go if the string breaks?

Answers

Answer:the answer is direction b

Explanation:

If the string breaks, the toy car go on path B. The correct option is D.

What is centrifugal force?

The pseudo force which acts when the centripetal force ceases to act on the particle moving in the circular path. While moving, the centripetal force acts towards the center of the circular path.

A toy car is tied to a post with string, causing it to drive in a tight circle. If the string breaks, the toy car is thrown out of the track.

The centrifugal force acts away from the center. But the velocity of motion will be tangential to the circular path. So, when string breaks, the toy car will follow the path B.

Thus, the correct option is D.

Learn more about centrifugal force.

https://brainly.com/question/17167298

#SPJ2

which action will decrease the gravitational force between two objects ?

Answers

Answer:

c

Explanation:

moving the mass of each object

Answer:C. Moving the objects farther apart

Explanation:

if your smart in science please help me, thank u

Answers

Answer:

Air steel water

Explanation:

The other name for 'net force' is 'unbalanced force'. What is the name of the force that could be applied to an object that would balance a net force and create a state of equilibrium?

Answers

Answer:

Since these two forces are of equal magnitude and in opposite directions, they balance each other. The book is said to be at equilibrium. There is no unbalanced force acting upon the book and thus the book maintains its state of motion. When all the forces acting upon an object balance each other, the object will be at equilibrium; it will not accelerate.

Explanation:

Please help!1!!1111!!1!!!

what are all 7 parts of the eye?

Answers

Answer:

The Sclera, Cornea, Iris/Pupil, Lens, Retina, Ciliary Muscle, and Optic Nerve

Diagram:

Answer:

Sclera. The sclera is the white of the eye. ...

The Cornea. The cornea is the clear bulging surface in front of the eye. ...

Anterior & Posterior Chambers. The anterior chamber is between the cornea and the iris. ...

Iris/Pupil. ...

Lens. ...

Vitreous Humor. ...

Retina.

Explanation:

Sclera. The sclera is the white of the eye. ...

The Cornea. The cornea is the clear bulging surface in front of the eye. ...

Anterior & Posterior Chambers. The anterior chamber is between the cornea and the iris. ...

Iris/Pupil. ...

Lens. ...

Vitreous Humor. ...

Retina.

What is the force due to gravity of a 38 kg student?

Answers

Answer:

F_g = 372.78 N

Explanation:

Formula for force of gravity is;

F_g = mg

Where;

m is mass

g is acceleration due to gravity

We are given;

Mass = 38 kg

Acceleration due to gravity has a constant value of 9.81 m/s²

Thus;

F_g = 38 × 9.81

F_g = 372.78 N

Find the mass of the car.

Answers

[tex]\huge\boxed{770.8\overline{3}\ \text{kg}}[/tex]

We know that force equals mass times acceleration, so substitute in the known values and solve.

[tex]\begin{aligned}F&=ma\\1850&=m*2.4\\1850\div2.4&=m*2.4\div2.4\\\boxed{770.8\overline{3}}&=m\end{aligned}[/tex]

A repelling force occurs between two charged objects when the charges are of Equal magnitude. Equal magnitude. a Unequal magnitude.b Unequal magnitude. c Like/same signs.d Like/same signs. e Unlike signs. help plz

Answers

Answer:

c Like/same signs

Explanation:

A repelling force occurs between two or more charged objects with the charges are of like or same sign.

According to Coulombs law, like charges repel on another, unlike charges attracts on another. If a positive charge comes into the vicinity of another positive charge, there will be repulsion. When oppositely charge species are brought near each other, there is an attraction.

Therefore, repulsion occurs when like charges are brought close to each other.

Sandy wanted to find out

Answers

Answer:

I prefer to write the full question.....I think you should too.....or this is just free points?

30 PT Pweese help one more timeeee

pweese look at the image below

Answers

Answer:

A

Explanation:

X Is going vertical  while the other is horizontal

Answer:

(I dont know why my answer was deleted but here it is again)

A) slowing down in the negative direction

Explanation:

{Reason why is because it is slowing down, negative wise (it said i have to give a an explanation so you don't have to mind this parenthesis lololol)}

Hope this helps!!

God Bless!!

~DuffyDuck~

(Btw it said you gave me brainliest so thank you, even though it was deleted lol. You are awesome haha)

Newton's first law states that objects do not change their motion unless acted upon by a net force. What does the word "net" mean in this context?
A A woven net, such as a fishing net or basketball net
B To catch or ensnare
C Remaining or left over after everything has been accounted for
D To cover, such as with mosquito netting​

Answers

Answer:

Explanation:

C Remaining or left over after everything has been accounted for.

You can have as many forces as you can define as long as there is an opposing force that cancels it out. If there is just 1 more force that cannot be cancelled, then it is a remaining force and it determines what happens to the object.

The rest have to do with something that resembles a fisherman's net.

Answer:

C

Explanation:

Only reasonable answer.

The ____ of an earthquake is a measure of its strength.
Please help!

Answers

the answer should be magnitude!

If you drop a rock from 490 meters high, how long will it take the hit the ground? (Remember to make height negative when solving because it is falling)

A. 12.88 Seconds
B. 7.88 Seconds
C. 5 Seconds
D. 10 Seconds

Answers

Answer:

C

Explanation:

Cody lives in Florida along the eastern coast. The kind of air mass likely to occur

over his region would be
Choose...
. It would develop here because
Choose...
.

Answers

The air is likely to be humid because it is coastal and very warm there

Which of the following describes air temperature and air pressure at higher altitudes?

Group of answer choices:

Air temperature increase while air pressure decreases

Air temperature and air pressure both decrease

Air temperature and air pressure both increase

Air temperature decreases while air pressure increases

Answers

Answer:

Air temperature and air pressure both decreases

Answer: A

Explanation:

Question 4 What is the standard Hz rate (cycles per second) in the US? 60 Hz 20 Hz 50 Hz 80 Hz​

Answers

The standard in the United States is 120-volt and 60Hz AC electricity.

Answer:

120-volt and 60Hz AC electricity.

Explanation:

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