Pls help will give brainlist

solar wind: gives comets their tail

solar flares: a big explosion on the surface of the sun

sunspots:every 11 years there is a peak in the number of them

Answer:

yeppppppppppppp

Answer:

yes

plants makes the oxygen by the

process of photosynthesis and

release to environment and animals

uses these oxygen to survive on this Earth

hope it helps

Answer:

Nature is important

Explanation:

Answer:

Element   Symbol   Atomic Mass   # of Atoms  Mass Percent

Chlorine              Cl       35.453                             2        29.670%

Calcium                Ca     40.078                      1         16.770%

Oxygen                 O   15.9994                             8            53.559%                              

Explanation:

Answer:

the most common is 'direct combustion'. 

Answer:

A

Explanation:

Florine F and Bromine Br these two elements have same physical and chemical properties. Hence option A is correct.

Atom is smallest entity of a body. Body is made up of atoms. it is basic building block of a body. An atom consist of electrons, protons and neutrons as sub atomic particle. whole mass of the atom is concentrated at the center of the atom which we call it as nucleus, nucleus consist of proton and neutron. Electron revolve around the nucleus at determined(fixed) orbit. Total number of protons in the atom decides the atomic number and  the elements in the periodic table.

The electrons which are completely filled orbitals are called as core shell electrons and which are not filled completely are called as valence electron. valence electrons are responsible for physical and chemical properties of the element. Elements which are on same column in periodic table have same number of valence electrons . Hence they have same properties.

Chlorine, Florine and bromine comes in halogen group. it require only one electron to complete its Octet rule. chemical and physical properties are decided by the valence electron of the element. As Florine and Bromine has same valence electron as chlorine. their properties also likely to be same.

Hence option A is correct.

To know more about atom :

https://brainly.com/question/29695801

#SPJ3.

Answer:

one-half

Explanation:

cuz for a first order reaction is a half life independent of concentration and constant over time

Answer:

the attraction water molecules have to other surfaces

Explanation:

Adhesion is defined as  the attractive forces between unlike substances, e.g water moving up a capillary tube.

Adhesion is the tendency of dissimilar particles or surfaces to cling to one another(Wikipedia).

So, what we mean by adhesion in this context, is the attraction water molecules to other surfaces.

The movement of water on and above the earth's surface is called the hydrologic cycle, or the water cycle. Hope this helps!

Answer:

WhAT

Explanation:

WTH

Answer:

carbon

Explanation:

Carbon forms compounds that make up about 18 percent of all the matter in living things. The processes by which organisms consume carbon and return it to their surroundings constitute the carbon cycle.

Answer:

Explanation:a

Oakk

Answer:

the open bag allowed the gas from the reaction to escape

Answer:

The answer is Yes

Explanation:

Barium Hydroxide + Hydrogen Bromide = Barium Bromide + Water =

Double Displacement

Answer:

Our discussion up to now has centered on types of bonds that involve. This kind of bonding is called ionic bonding (as you are almost certainly already aware). NaCl is a solid at room temperature, with a very high melting point (801 °C), similar highly reactive metal – sodium (Na), and a pale green gas – chlorine (Cl2).

Explanation:

I hope this is what you needed. I also hope that you have a great day.

Answer:

strong winds that blow in short spurts over a small distance

Explanation:

Generally, the most common factor that causes the largest waves in the ocean is winds. this is also called wind-driven waves of the ocean when the surface wind flows on the surface of the ocean, this disturbance creates the friction between surface wind and surface of the ocean which creates waves in the ocean

Answer:

B

Explanation:

k-12 test

Answer:

Calcium

Explanation:

It has similar properties as Magnesium (Mg) and Strontium (Sr)

The Atomic number of Calcium (Ca) is 20

The Atomic number of Krypton is 36

The Atomic number of Magnesium is 12

12 < 20 < 36

Answer:

yes

Explanation:

Unlike a gas, a liquid does not disperse to fill every space of a container, and maintains a fairly constant density. A distinctive property of the liquid state is surface tension, leading to wetting phenomena. Water is, by far, the most common liquid on Earth.

hope this helps

brainliest?!

Answer:

b) a charged particle

Explanation:

Answer:

Explanation:

oxygen is a 15 and nitrogen science chemistry i'm guessing

Answer:

Ian Somerhalder because he's JUST SO fine

Explanation:

Answer:

All particles have energy, and the energy varies depending on the temperature the sample of matter is in, which determines if the substance is a solid, liquid, or gas. Solid particles have the least amount of energy, and gas particles have the greatest amount of energy.

Answer:

the answer is electron....

Answer:

0.13 grams of O2

Explanation:

Just did worksheet