Answer:
protostar
Explanation:
A protostar is a very young star that is still gathering mass from its parent molecular cloud.
What element does this model represent?
Answer:
[tex]$\tex$ Option 2: Aluminum (Al)[/tex]
Explanation:
When we are given Bohr models, we will be given a circle with rings surrounding it. The circle in the center of the model represents the nucleus, which contains the neutrons and the protons. The rings will have spherical structures that are attached to them in an orderly fashion - these model the electrons of an atom.
Protons are positively-charged subatomic particles that also identify the atom's chemical identity and atomic number. Using the number of protons, we are able to identify the element. The neutrons are the neutrally-charged subatomic particles that give an atom its weight. When you look at a traditional periodic table, you'll see that the square that houses an element has its symbol, atomic number, and atomic mass. The atomic mass is equivalent to the sum of the protons and neutrons.Electrons are negatively-charged subatomic particles that give an atom its overall charge. In order for an atom to be stable and neutral, the electrons must equal the protons. Otherwise, we have an unstable atom called an ion with either a positive or a negative charge. This is dependent on whether an atom has gained or lost electrons.When we reference the model, we will see that there are 13 "p" and 14 "n" within the green circle. The "n" refers to neutrons and the "p" refers to protons. We can also count the red spheres and make quick observations about these: there are 2 red spheres on the innermost ring - for simplicity reasons, we will title this ring as r = 1. There are 8 red spheres on the middle ring - this ring will be titled r = 2. Finally, we can see that there are 2 more electrons in the outermost ring - this ring will be titled r = 3.
Now, because we have 13 protons, we know that the protons are equivalent to the atomic number.
If we check the periodic table, we will see that Silicon (Si) has an atomic number of 14. This doesn't match the number of protons, so we can rule out that a silicon atom is not the element shown.When we use the same process and check aluminum, we discover that Aluminum (Al) has an atomic number of 13. Since the number of protons and the atomic number are equal, we can conclude that this is the element.If we check Helium (He), we see that it has an atomic number of 2, so this is definitely not our element in question.Now that we have concluded that Aluminum is our element, we can check this to be sure. If we use the formula m = n + p (where m is the atomic mass, n is the neutrons, and p is the protons), we can check to be sure we have selected the right element.
The given mass of aluminum on the periodic table is 26.982 atomic mass units. We round to the nearest integer when it comes to this, so we round 26.982 up to 27 even.
Now that we have determined the atomic mass and we are given the number of both protons and neutrons, we can act as if we weren't given the amount of neutrons and only the mass and amount of protons. We can then use the equation to solve for the amount of neutrons and check that the selection we made is correct.
Steps
Substitute 27 for m and 13 for p.Subtract 13 from both sides to isolate the n and place the constants on the same side of the equation.Combine like terms by taking the appropriate operations (in this case, this is subtracting 13 from 27).Finally, because we are solving for n, you can reverse the equation (place the constant on the right and place the variable on the left; i.e., 72 = x → x = 72).[tex]27 = n + 13\\\\27 - 13 = n\\\\14 = n\\\\n = 14[/tex]
The work we just performed will allow us to confirm that because we solved for 14 neutrons, Aluminum (Al) is indeed the element represented by the model.
Hope this helps! :)
which one is worse?
cigarettes or vaping?
would kindly appreciate it if you wrote why with a lot of information
Answer:
Both things are bad to your health but vaping has a minor impact in your health than cigarettes.
Explanation:
Even though vaping has a lot of chemicals that not just include nicotine but other substances that are toxic and that stay in your lungs for a long time giving it time to damage your lungs from the inside,
Cigarettes have over 7,000 toxic chemicals that can cause cancer and / or other illness in your body. This cancer can be caused inside your lungs but it can also give you cancer in other certain parts of your body.
Checkpoint Bohr Mod
Which of the following statements is NOT true of Lewis Dot Diagrams?
Give us a way to show the valence electrons without having to draw the entire Bohr
The valence electrons determine whether or not the atom will react with other atoms
Atoms strive to be stable with a full valence shell so they will give, take, or share ele
shell.
Include all of the known electrons for the atom it represents.
What is the is arrow pointing to? A.period symbol of manganese. B isotope symbol of manganese. C.group symbol of manganese. D atomic symbol of manganese.
Answer: The answer is D. the arrow is pointing at the atomic symbol of manganese
Explanation:
Atomic symbols are the letters that represent elements like how the atomic symbol "O" represents the element oxygen
A mixture where one substance dissolves in another is called:
A) mixture
B) pure substance
C) solution
D) group
Answer:
its the big A
Explanation:
What is the environmental change shown in the image?
dry and cracked soil with little vegetation
Disease
Lack of food and water
Reduced space
Pollution
Answer:
B. Lack of food and water is the answer. I don't see a picture
Answer:
a lack of food is your answer
Energy of vibrations is ___________ energy.
Answer:
kinetic energy
Explanation:
Kinetic energy is motion; it is the motion of waves, electrons, atoms, molecules, substances, and objects. Electrical energy is the movement of electrons.
Answer:
Yeah it's kinetic energy
Explanation:
Help me fthffvghjhoun
Which graph best supports the claim that the gravitational force between two point masses is a function of the distance between the masses?
A) A
B) B
C) C
D) D
Answer:
C.
Explanation:
To make this easier, Mathematically, a function is a straight line (linear) that goes through the origin.
Graph B best supports the claim that the gravitational force between two point masses is a function of the distance between the masses. Therefore, option B is correct.
Which graph shows the given situation?The graph that best supports the claim that the gravitational force between two point masses is a function of the distance between the masses and is a hyperbolic curve with an inverse square relationship.
Therefore, the graph that shows the force of attraction between two point masses (y-axis) plotted against the distance between them (x-axis) in a hyperbolic curve with an inverse square relationship is the one that best supports the claim.
This graph should show a decrease in the force of attraction as the distance between the masses increases, and the curve should become steeper as the distance decreases. Hence, option B is correct.
Learn more about graphs, here:
https://brainly.com/question/17267403
#SPJ3
Is Fossil Fuel OverUse threatening your health
by: Erin Cobb
Summary Paragraph (last sentence MUST conclude) Your first sentence must include the title/author of the article, verb, and central idea
Answer/Explanation:
Is Fossil Fuel Overuse threatening your health? Pollution that not only can harm health but also foster climate changes. The Overuse of fossil fuel damages our health. For Instance, Burning fossil Fuel increates a carbon dioxide; to much CO_2 is harmful to our health. This Proves that Fossil fuel can harm our health. Burning fossil fuels could lead to developmental delays in children. This tells us it can be very harmful for children. To much Co_2 can cause children to have adhd. In the text it states children exposed to air pollution from fossil fuels have a significantly greater chance of developmental.Fossil fuels burning cause global warning that makes it difficult to grow crops. This reveals that Fossil fuels can be harmful for the environment. Burning fossil fuels can cause extreme weather and it can cause people to lose their homes and lives.
~Lenvy~
Answer:
Ofc fossil fuel overuse threaten my health.
Explanation:
Is Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your healthIs Fossil Fuel OverUse threatening your health. YESHHHHHHHH.
Eliza places an 18-gram piece of an unknown substance into a graduated cylinder that is filled with 5 mL of water, and the water rises from the 5 mL line to the 8 mL line. What is the density of the unknown substance in g/mL?
A) 3.6 g/mL
B) 8 g/mL
C) 0.167 g/mL
D) 6 g/mL
Plz helpp
Answer:
B?
Explanation:
HELPPPPPPP
Which nitrogen base sequence is the partner of C–A–T–C–G–A?
a.C–A–T–C–G–A
b.G–T–A–G–C–T
c.T–G–C–T–A–G
d.G–C–A–T–G–T
Water has a boiling point of 100 degrees Celsius, a melting point of 0 degrees Celsius, and a density of 1 g/cm. What is this a list of?
1. unimportant details
2. chemical properties
3. incorrect facts
4. physical properties
Answer:
Chemical properties
Explanation:
Water has a boiling point of 100°C or 373 KWater has melting point of 0°C or more exactly 273.16KThe density of water at 4°C is 1000kg/m^3At the top of a high mountain, the weight of an object is:
A. greater than at sea level
B. less than at sea level
C. the same as that at sea level
Answer:
b is answer. im sorry
How can heredity be used to describe the real world?
Science
Answer:
Characteristics that are passed on from one generation to the next
Explanation:
If gravity is always pushing down on you, what prevents you from sinking down into the ground?
Answer:
The ground is pushing you up with an equal force.
Explanation:
HOPE THIS HELPS ;)
Answer:
The ground is denser than we are. The atoms making up the ground are tightly packed so basically nothing and just fall through them.
Explanation:
the Monstera Plant, in the rainforest have long, grooved leaves to drop water to the forest
floor. The excessive water that falls in the rainforest could lead to mold, so the leaves adapted to
have “drip tips” that allow the water to run off of the leaves.
What type of adaptations are these?
Monstera Plants of the rainforest. Your answer should be 3–4 sentences long.
Answer:
Theses are physical adaptations. The trees have adapted to protect themselves against mold. The “drip tips” are a new physical part of the trees, so they are physical adaptations.
(The pictures show four electrically charged items.) If a student rubs a glass rod with a piece of silk, giving the rod a positive charge, which of the items will the rod attract?
A) Balloon 1, only
B) Plastic sheet 1, only
C) Balloon 1 and Plastic sheet 2
D) Balloon 2 and Plastic sheet 1
Answer:
c
Explanation:
because because of the energy conecction all the pubical will come to getter and make he force stronger which by any mean attraction
Answer:
C) Balloon 1 and Plastic sheet 2
Explanation:
When vinegar and baking soda are mixed together, they experience a chemical change.
What evidence given would lead a person to think that the change is a chemical change?
the solution heats up or cools off
the solution changes shape
the solution changes size
Why are spines considered a physical characteristic adaptation in cactus?
a cactus with sharp spines
The spines make the cactus look taller.
The spines protect the cactus from animals.
The spines allow for easier photosynthesis.
The spines are the seeds of the cactus.
Answer:
Explanation:
Spines are considered a physical characteristic adaptation in cacti because they help the plant to survive in its dry and hot environment.
The spines serve to protect the cactus from herbivores and other animals that might eat or damage it. They also help to regulate the temperature of the cactus by reducing the amount of sunlight that hits its epidermis. Additionally, the spines help to reduce water loss by minimizing the amount of surface area over which water can be lost through transpiration. Thus, spines are an important adaptation that enables cactus plants to survive and thrive in their harsh and arid environments.
The halogens, the elements of Family 17 on the periodic table, combine easily with elements from Family 1. When a halogen reacts with a metal, what type of compound is formed?
A.
salt
B.
potassium
C.
alloys
D.
noble gas
Answer:
A. saltExplanation:
When halogen elements react with group one metals they form halide salts.Sorry if it's wrong •-•Answer:
When Halogens are reacted with metals they form a salt
Explanation:
E.g Sodium+chlorine=sodiumchloride
Match the element with its description.
Answer Choices:
1. Highly reactive gas
2. Malleable, soft, and shiny
3. Nonreactive gas
4. Has properties of both metals and nonmetals
20 POINTS AND BRAINLIEST
Which material is typically used as a thermal insulator?
A. copper
B. foam
C. ceramic
D. aluminum
Answer:
ceramic
Explanation:
Answer the question below. Do not answer and just say "I do not know" Thank you!
C
One type of bacteria can have various forms.
The context above talks about some e coli useful and some e coli harmful so..
A characteristic of this environment is very little precipitation, sometimes in the form of snow. Which environment is this describing?
Desert
NOT Grassland
Mountain
Tundra
Answer:
the answer is desert, hope this helped
Explanation:
Which climate zone is hot and receives a lot of precipitation throughout the year?(2 points)
Equator
Polar
Temperate
Tropical
Answer:
Equator
Explanation:
Answer: tropical
Explanation:
What kind of data does regional climate mainly collect and concentrate on?
Answer:
Climate, atmosphere, and land
Explanation:
Some of the data collected include air chemistry, temperature, precipitation, cloud cover, and wind speed. Instruments carried on balloons and wind profiling radar provide observations from the surface to more than 10 miles high.
What do the dots around this letter represent ?
Answer: Valence electrons
Explanation: the dots represent the amount of electrons in an outer shell
Answer:
c
Explanation:
Valence electrons
Analyze the given diagram of the carbon cycle below.
Part 1: Which process does arrow A represent?
Part 2: Which type of energy transformation does arrow A represent?
Part 3: Justify why this process is a recycling of carbon in the carbon cycle.
Use complete sentences to explain your answer.
Answer:
1) The process arrow A represents is photosynthesis.
2) Arrow A represents light energy transformation. Light energy from the sun is converted into chemical energy in plants.
3) Photosynthesis is part of a carbon recycling process in the carbon cycle. Plants absorb light energy and convert it to chemical energy. Plants absorb carbon dioxide which is exhaled by humans and animals. Plants then produce oxygen which is absorbed by humans and animals. Animals also eat plants thus passing the carbon compounds along.
Explanation:
Answer:
1) The process arrow A represents is photosynthesis.
2) Arrow A represents light energy transformation. Light energy from the sun is converted into chemical energy in plants.
3) Photosynthesis is part of a carbon recycling process in the carbon cycle. Plants absorb light energy and convert it to chemical energy. Plants absorb carbon dioxide which is exhaled by humans and animals. Plants then produce oxygen which is absorbed by humans and animals. Animals also eat plants thus passing the carbon compounds along.
Explanation:
(GIVING BRAINLYIST) Environment A is warm and gets lots of rain. Environment B is warmer and gets more rain year round. Identify Environment A.
Desert
NOT B) Rainforest
Swamp
Tundra