Answer:
Stars generate energy through nuclear fusion. Here's an easy explanation about how the process works. ... Stars spend most of their lives repetitively compressing two hydrogen atoms into a single helium atom – plus a lot of energy, which is released as light and heat.
Question 1
Why can't wee see atoms?
Answer:
They're too small
Explanation:
Atoms are smaller than the wavelength of visible light
Answer:
too small
Explanation:
Gases ___ out and fill their container completely
Answer: Gases have the lowest density of the three, are highly compressible, and completely fill any container in which they are placed. Gases behave this way because their intermolecular forces are relatively weak, so their molecules are constantly moving independently of the other molecules present. Solids, in contrast, are relatively dense, rigid, and incompressible because their intermolecular forces are so strong that the molecules are essentially locked in place.
Explanation:
Does Magnesium or Carbon have similar properties to Beryllium ? Which one ?
Answer:
Yes, Magnesium
Electron configuration always starts with the lowest energy electrons.
true or false
Answer:
True I think..-
Explanation:
Sorry if it's wrong.-
During which phase of the moon do neap tides occur?
A: full
B: gibbous
C: new
D: quarter
Plz I need help I think it’s A plz tell me before time runs out
IT IS NOT A
the full moon is incorrect I just don know the right answer sorry
BE FIRST TO ANSWER PLEASEEE ASAP! :D
Answer:
I want to say E or B
Explanation:
PLS HELP!!! ASAP!! 10 POINTS!!
Which of the subatomic particles are most responsible for the identity of an element?
neutrons
electrons
atoms
protons
Protons
Protons are the subatomic particle that determines the identity of an element.
Answer:
Explanation:Protons and neutrons are located in the nucleus of an atom and determine the mass of an atom. Protons have a positive electrical charge and electrons have a negative electrical charge. Atoms that have the same number of protons and electrons do not have an electrical charge.
Explain the law of conservation of mass.
Answer:
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.
Explanation:
Your answer should be- that in a chemical reaction mass is neither created nor destroyed.
Explanation:
Is that good?
Which of the following is the abbreviation for the element Gold?
Answer:
Au
Explanation:
trust me, the abbrevation for gold is Au. chemicaly, Medicaly, and in dentistry
the human eye has three types of cones cells. damage to any one of the types of cone cells doesn't cause total blindness because of the
A. presence of rod cells
B. other two functional Cone cells
C. presence of optic nerves
they have rod cells - this helps them be able to see colors through a spectrrum located in the retina
name the gas formed when metals react with dilute hcl
Answer:
im maybe 80% sure it's hydrogen gas
Answer:
When a metal reacts with dilute hydrochloric acid, it forms a metal chloride salt and hydrogen gas.
need a top pick for another slide to talk about crystals
Answer:
tigers eyes
Explanation:
HELPP
A monatomic ion always have one unit of charge. (+1 or -1) on the species
true or false
Answer:
No, this is invalid. The term mono in front of monoatomic simply refers to the number of atoms that are present in a compound or simply by itself it has no relationship with respect to the overall charge of the compound.
Explanation:
For instance Ca is considered as a monoatomic ion but it has a charge of +2.
Which of the following occurs when a liquid becomes a gas
Answer:
Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.
C12H7Cl3FNaO2 what are the elements in that chemical formula
Answer:
hope it helped you
Explanation:
Sodium fluoride - 5-chloro-2-(2,4-dichlorophenoxy)phenol (1:1:1) | C12H7Cl3FNaO2 |
An airplane travels east with a velocity of 90 m/s. How long does it take the airplane to cover a distance of 405 meters?
A. 4.5 seconds
B. 60.0 seconds
C. 90.0 seconds
D. 3.0 seconds
Answer:
The answer is option AExplanation:
To find the time taken given the velocity and distance covered we use the formula
[tex]t = \frac{d}{v} \\ [/tex]
From the question we have
[tex]t = \frac{405}{90} \\ [/tex]
We have the final answer as
4.5 sHope this helps you
Which statement is not
true?
A. Protons are positive and neutrons are
neutral
B. Electrons have the most mass of the
subatomic particles
C. Protons and Neutrons are found in the
nucleus
Electrons are found outside the nucleus
and have a negative charge
Answer:
B. Electrons have the most mass of the
subatomic particles
Compared to the mass of neutron and proton, mass of electron is negligible.
Answer:
B
Explanation:
when creating a Bohr model, you will usually mark protons + or P and neutrons are usually 0 or N.
Electrons are on the rings surrounding the nucleus, but everything else is inside.
Electrons are typically represented by - or E
During a change in state, energy is transferred in the form of
heat
light
moisture
motion
Answer:
heat I think.....
Hope it will help you......During a change in state, energy is transferred in the form of heat.
Hence, Option (A) is correct.
What is States of matter ?
When energy is added or removed to matter in the form of heat, it changes state to form a state of matter.
A state of matter is defined as one of the ways in which matter can interact with itself to form a homogeneous phase.
Therefore , During a change in state, energy is transferred in the form
of heat. Hence, Option (A) is correct.
Learn more about States of matter here ;
https://brainly.com/question/9402776
#SPJ2
NH3 is a _______________
Answer:
compound
Explanation:
Answer:
your answer would be compound
when water changes state from a liquid to a solid is energy absorbed or lost?
Answer:
Loses
Explanation:
liquid changes into solid, heat is released. The energy released upon freezing, known as the enthalpy of fusion, is a latent heat, and is exactly the same as the energy required to melt the same amount of the solid.
Answer:
Matter either loses or absorbs energy when it changes from one state to another. For example, when matter changes from a liquid to a solid, it loses energy. The opposite happens when matter changes from a solid to a liquid. For a solid to change to a liquid, matter must absorb energy from its surroundings.
Explanation:
Which changes involve forming or breaking chemical bonds?
A.burning and digesting
B.boiling and melting
C.burning and melting
D.rusting and cutting
Answer:
d
Explanation:
i took the test
What is the freezing point on this graph?
Answer:
Point a becuse it is the closest to -5*
Explanation:
Answer:
-5
Explanation:
Negative numbers get you confused.
- = Negative
5 = Number
You know 5 right?
I I I I I - 5
5 is a really less number already.
If you add a negative it will be double small.
Now lets figure out the problem:
What is the freezing point on this graph?
-5 is the smallest number
5 is bigger than -5
15 is bigger than 5 and -5
25 is bigger than all the numbers.
I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.
Therefore, -5 is freezing.
Why does a planet stay in orbit?
Answer:
Gravity
Explanation:
A planet is gravitationally pulled around the sun.
Answer:
beause of gravitys pull and because the atmosphere of the beyond lol also bcs this i hope this helps your welcome boo >3
Explanation:
Newton realized that the reason the planets orbit the Sun is related to why objects fall to Earth when we drop them. The Sun's gravity pulls on the planets, just as Earth's gravity pulls down anything that is not held up by some other force and keeps you and me on the ground.
Put the following scientists in order of their discoveries: 1. Dalton, 2. Bohr, 3. Rutherford, 4. Democritus, 5. Thomson
Please help me I really need the answer
How can we gather more evidence about weather lava or water formed the channel on Mars
Explain why the gamma rays do not bend.
Which element would be the least similar to magnesium
Answer:
Chemistry Q&A Library decide which element probably forms a compound with chlorine that has a chemical formula most and least similar to the chemical formula of the compound formed by chlorine and magnesium most and least similar to magnesium:strontium,rubidium,phosphorus, cesium
Explanation:
hope this helped ❤✨
The distance of the Kentucky Derby, a classic horse race, is 1.25 miles. How is this distance expressed in furlongs ?
How can you tell if an element is a metal or a nonmetal??
Answer:
Elements to the left of the line are considered metals. Elements just to the right of the line exhibit properties of both metals and nonmetals and are termed metalloids or semimetals. Elements to the far right of the periodic table are nonmetals. The exception is hydrogen (H), the first element on the periodic table.
Explanation:
Answer:
looking at its metallic luster
Explanation:
Elements may be classified as either metals or nonmetals based on their properties. Much of the time, you can tell an element is a metal simply by looking at its metallic luster, but this isn't the only distinction between these two general groups of elements. Most elements are metals.
40POINTS AND BRAINLIEST Discuss the orders in which electrons are filled in the s and d subshells of the first three elements in group11
Step 1: add electrons to fill the 1s subshell (maximum of 2 electrons), when this is full, go to step 2. Step 2: add electrons to fill the 2s subshell (maximum of 2 electrons), when this is full, go to step 3. Step 3: add electrons to fill the 2p subshell (maximum of 6 electrons), when this is full, go to step 4. Step 4: add electrons to fill the 3s subshell (maximum of 2 electrons), when this is full, go to step 5. Step 5: add electrons to fill the 3p subshell (maximum of 6 electrons), when this is full, go to step 6. Step 6: add electrons to the 4s subshell (maximum of 2 electrons), when this is full, go to step 7. Step 7: add electrons to the 3d subshell (maximum of 10 electrons), when this is full, go to step 8. Step 8: add electrons to the 4p subshell (maximum of 6 electrons), when this is full, go to step 9. etc
So for Cu would be: 1s^22s^22p^63s^23p^63d^9
Ag would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^1
Au would be: 1s^22s^22p^63s^23p^63d^104s^24p^64d^105s^25p^64f^145d^106s^1