Answer:
B. Ethylene can be chemically changed to become polyethylene.
Explanation:
You can make polyethylene by purifying a quantity of ethylene.
Why are rocks important to geologists? Check all that apply.
A. They give clues about Earth’s past environments.
B. They present opportunities for future use in technology.
C. They contain valuable resources used for building.
D. Many people like to collect different types of rocks.
E. Rocks are important to modern transportation.
Due in 5! asap please! thanks have a good day!:)
Answer:
I think it's A
Explanation:
They probably have fossils inside and other designs about dead or extinct creatures
Answer:
abc
Explanation:
got it right
A model of an atom shows eight electrons in rings that represent different energy levels. How many electrons are in each energy level?
A. two in the first energy level, six in the second energy leve
B. eight in the first energy level, zero in the second energy level
C. zero in the first energy level, eight in the second energy level
D. four in the first energy level, four in the second energy level
Which statement about an atom is correct?(1 point)
A. The neutron has no charge and is found outside of the nucleus.
B. The electron has a negative charge and is found outside of the nucleus.
C. The proton has no charge and is found in the nucleus.
D. The neutron has a negative charge and is found in the nucleus A student wants to draw a model of an atom.
Which statement describes how to find the number of neutrons to include in the model?(1 point)
A. Subtract the atomic number from the mass number.
B. Add the number of electrons to the number of protons.
C. Subtract the number of electrons from the number of protons.
D. Add the atomic number and the mass number.
What is the atomic number of an atom?(1 point)
A. the number of particles outside the nucleus
B. the number of particles in the nucleus
C. the number of neutrons
D. the number of protons
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Energy levels are arranged in increasing order of magnitude in accordance with the Bohr model.
The correct sequence of answers is as follows;
1) two in the first energy level, six in the second energy level
2) The electron has a negative charge and is found outside of the nucleus.
3) Subtract the atomic number from the mass number.
4) the number of protons
An atom contains a nucleus and electrons arranged in energy levels outside the nucleus. Each energy level is filled with electrons.
The first energy level contains only two electrons, subsequent energy levels contain a maximum of eight electrons.
The proton is positively charged, the neutron has no charge and the electron is negatively charged. The proton and neutron are found inside the nucleus while the electrons are negatively charged and found outside the nucleus.
The mass number is the sum of the number of protons and neutrons. hence the number of neutrons is the difference between the mass number and the number of protons.
The number of protons in an atom is its atomic number.
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What observations did Galileo make with his telescope? Select all that apply.
star clusters in the Milky Way
comets in the Kuiper belt
craters on the Moon
moons of Jupiter
Answer:
Explanation:
Craters of the moon
4 moons on Jupiter
hope this helps
Answer:
Craters on the Moon
and moons of Jupiter
Friction is a force that opposes motion. When friction is present, heat is generated.
According to the law of conservation of energy, which of the following statements is true about the energy associated with friction?
a. Energy is destroyed by the force of friction.
b. Energy is created with friction.
c. Some of the energy is converted into thermal energy.
d. Most of the energy is transformed into chemical energy.
Answer:
I think it is: Some of the energy is converted into thermal energy.
Explanation:
Please let me know if I am wrong so I can fix it :)
To solve this , we must know the concept behind law of conservation of energy. Therefore, the correct option is option C that is Some of the energy is converted into thermal energy.
What is aw of conservation of energy?Energy cannot be generated or destroyed, but it may move from one form to another, according to the physical rule of conservation of energy. The total energy of an isolated system remains constant or is conserved within a certain frame of reference.
Friction is a force that opposes motion. When friction is present, heat is generated. According to the law of conservation of energy, the statements that is true about the energy associated with friction is Some of the energy is converted into thermal energy.
Therefore, the correct option is option C that is Some of the energy is converted into thermal energy.
To know more about law of conservation of energy, here:
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How does an atom change if all of its electrons are removed?
p.s. I'll mark the first answer the brainliest if it is correct! ;)
a. The atom’s volume increases.
b. The atom’s mass increases.
c. The atom becomes positively charged.
d. The atom becomes negatively charged.
c. The atom becomes positively charged
if the electrons are removed it means theres no longer a negative charge to balance the positive charge of the protons in the atom
Match the term to its definition (Lessons 6.03, 6.04 and 6.05)
(i can't fit this all without confusion)
Answer: the first paragraph is rain forest biome and the 2nd one is arctic tundra biome and finally the last paragraph is ocean or marine biome
Explanation:
rain forests have warm temperatures and include alot of animals and plants , artctic tundra biome includes cold temperatures ice stuff and all that and ocean or marine biome is pretty much just the ocean with seals , whales and marine life yk.
HELP ASAP ITS 8th GRADE SCIENCE BUT IT DOESN'T HAVE THAT OPTION
The graph shows the kinetic energy (KE) and potential energy (PE) of a bouncing ball over a period of 9 seconds. Use the graph to answer question 2-3.
2. When does the ball have the most kinetic energy?
3. What statement best describes what happens to the total mechanical energy of the ball as it bounces?
please and thank you <333
Answer: By best guest is 2-A & 3-A
Explanation:
I would have an expert answer this just in cast i'm wrong
Two types of liquids, two types of gases, two types of solids.
Answer:
liquids: water and soda
gases: oxygen and carbon dioxide
solid: a chair and a notebook
What is the Uncontrolled variables/limitations for this science expirement? Does the shape of an ice cube affect how quickly it grows? Need help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAPNeed help ASAP
Match each letter with the correct label. Use the atom diagram below.
Electron - Nucleus - Proton - Neutron
Answer:
Explanation: First and foremost, we must carefully examine the provided diagram in order to properly name the sections of an atom diagram.
Step-by-step instructions are given along with the answers in sequential sequence.
Correct answer for (A) is Electron since they are present at the outermost shell of an atom.The correct answer for (B) is Neutron since it is the central element of an atom.The proton is the right answer for (C), as it is included in the nucleus grouping with the neutron.The nucleus is the correct option for (D) since it is the primary component of the atom and includes both protons and neutrons.Learn more about the Atom here:
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What is it called when a plant’s embryo begins to grow?
photosynthesis
pollination
fertilization
germination
What information does the periodic table give you?
baking soda and vinegar come together to form new substances. what are these new substances called? *
A reactants
B compounds
C products
D chemical bonds
Answer:
Answer:C. Products
Explanation:
baking soda and vinegar are the reactants and when reactants are mixed to form new substances then they are called Products.
e.g: baking soda and vinegar are mixed together to form carbonic acid. In this chemical reaction reactants are baking soda and vinegar, Product is carbonic acid which is also known as Carbon dioxide gas.
In an electrical wire, if instead of copper, plastic wire is used. Would it conduct electricity?Justify your answer.
Answer:
No, a plastic wire would not conduct electricity. This is because plastic is an insulator that does not allow electric current to flow through it. In a wire, electrical conductivity is provided by the movement of charged particles - typically, electrons. Copper is an excellent conductor of electricity because it has a high number of free electrons that are not bound to atoms and can move through the wire very easily. However, in a plastic wire, the tightly bound electrons of its atoms do not allow for the free flow of charges, thus preventing the passage of electric current.
How do you make an atom model? PLEASE HELP ANY IDEAS GUYS?
Answer:
If you are looking for like a drawing say less.
Help meee pleaseeeeee science class!!
Answer:
Number 3 is corn starch.
Explanation:HOPE THIS HELPS YOU A BIT!
Eukaryotic gene expression is regulated during transcription and RNA processing, which take place in the nucleus, and during protein translation, which takes place in the cytoplasm. Further regulation may occur through post-translational modifications of proteins.
Answer:
Ok, is this a true and false question? Anyways, yes. the central dogma, from dna transcription to mRNA translation to proteins. and further regulation can occur through post-translational modifications of proteins. it is a true statement
Explanation:
You know that temperature measures how hot something is. What causes temperature?
Explanation:
A part of your brain called the hypothalamus controls your body temperature. In response to an infection, illness, or some other cause, the hypothalamus may reset the body to a higher temperature. So when a fever comes on, it's a sign that something is going on in your body.
PLS HELP I WILL MARK BRAINLYEST BUT PLS JUST HELP MEEEEEEEEEEEEEE
Microwaves have a higher _____________ than radio waves. Different ______________ of microwaves provide different information to scientists. Most microwaves are used in ___________________________.
Answer:
Radio waves are electromagnetic waves within the frequencies 30KHz - 300GHz, and include microwaves. Microwaves are at the higher frequency end of the radio wave band and low frequency radio waves are at the lower frequency end.
Explanation:
hope this helps and i hope i can please get brainliest
Answer:
hi kirishima it is me 0412919
Explanation:
i will give u brainly :D
Which of the following statements fully describes what an object may do when it experiences unbalanced forces? Select the two best answers.
A. It may change directions.
B. It will move at a constant speed.
C. It may slow down.
D. It may slow down or speed up.
E. It will stay stationary.
Answer:b
Explanation:
Please help me por favor :'(
In humans, these organs are part of a larger system, the ________ system.
A.) Circulatory
B.) Reproductive
C.) Digestive
D.) Nervous
c) Digestive.
The stomach, pancreas, gall bladder are all present in the digestive system.
Answer this please.
Answer:
Photoperiodism
Explanation:
E
Answer: sun lite
Explanation:
What is causing the increasing amount of CO2 in the atmosphere? What could be done about it?
please help bohr diagram practice
Answer:
nothing is here
Explanation:
When the speed of the bottle is 2 m/s, the KE is kg m2/s2. When the speed of the bottle is 3 m/s, the KE is kg m2/s2. When the speed of the bottle is 4 m/s, the KE is kg m2/s2. When the speed of the bottle is 5 m/s, the KE is kg m2/s2. When the speed of the bottle is 6 m/s, the KE is kg m2/s2.
instructions
In this part of the experiment, you will be changing the speed of the bottle by dropping it from different heights. You will use the same mass, 0.250 kg, for each trial, so record this mass in Table B for each velocity. Then, calculate the expected kinetic energy (KE) at each velocity. Use the formula KE = mv2,
where m is the mass and v is the speed. Record your calculations in Table B of your Student Guide.
Answer:
Based on the given instructions, you need to calculate the expected kinetic energy (KE) at each velocity using the formula KE = mv^2, where m is the mass and v is the speed. The mass is given as 0.250 kg.
Table B: Calculation of Kinetic Energy (KE)
Table B: Calculation of Kinetic Energy (KE)
Speed (m/s)Mass (kg)KE (kg m^2/s^2)20.2500.50030.2500.75040.2501.00050.2501.25060.2501.500
To calculate the kinetic energy at each velocity, multiply the mass (0.250 kg) by the square of the velocity.
For example, when the speed of the bottle is 2 m/s: KE = (0.250 kg) * (2 m/s)^2 = 0.250 kg * 4 m^2/s^2 = 1.000 kg m^2/s^2
Perform similar calculations for the other velocities and record the results in Table B.
Answer:
Explanation:mass of the bottle in each case is M = 0.250 kg
now as per given speeds we can use the formula of kinetic energy to find it
1) when speed is 2 m/s
kinetic energy is given as
2) when speed is 3 m/s
kinetic energy is given as
3) when speed is 4 m/s
kinetic energy is given as
4) when speed is 5 m/s
kinetic energy is given as
5) when speed is 6 m/s
kinetic energy is given as
What is the difference between a mixture, a solution, and a pure substance?
How is the stimulus concept currently in our lives? (Ivan Pavlov) in TTQA
Answer:
stimulus is anything that can trigger a physical or behavioral change. The plural of stimulus is stimuli. Stimuli can be external or internal. An example of external stimuli is your body responding to a medicine. An example of internal stimuli is your vital signs changing due to a change in the body.
Hey guys im gonna fail if i dont get these answer theses question right pls help me science is so hard
Answer:
Answer choice A
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