what is the goal of science??
The main goal of science has been building knowledge and understanding, regardless of its potential applications.
What is Science ?
The intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.
For example, investigating the chemical reactions that an organic compound undergoes in order to learn about its structure.
Therefore, The main goal of science has been building knowledge and understanding, regardless of its potential applications.
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Part 1: Name two elements that have the same properties as potassium (K). (4 points)
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of magnesium (Mg). Explain how you determined your answer using complete sentences. (6 points)
Answer:
Part 1: Sodium and Rubidium.
Part 2:
Protons = 12
reason: protons are equal to the atomic number of an atom. For Magnesium, atomic number is 12.
Neutrons:
[tex] = { \tt{24 - 12 }} \\ = { \tt{12 \: neutrons}}[/tex]
reason: neutrons is given by formula:
[tex]{ \tt{neutrons = mass \: number - atomic \: number}}[/tex]
where mass number of magnesium is 24.
electrons: = 12 electrons
reason: Magnesium atom has electrons summing up to 12
part 1: hydrogen and sodium? my memory is so bad ngl
part 2: 36 because there are 12 protons, 12 electrons, and 12 neutrons in an atom of magnesium.
What determines the amount of chemical energy a substance has? (Try not to make it long)
Answer: The bonds that hold molecules together contain the chemical energy available in a substance.
Explanation:
Explain an example of how energy is transferred from one form to another in the video.
PLEASE ANSWER FAST <3
Answer:
thermal energy occur in 3 ways: through conduction, convection, and radiation. when thermal energy is transferred between neighboring molecules that are in contact with one another, this is called conduction.
Explain the law of conservation of energy.
Answer:
Energy cannot be destroyed or created but can be transformed from one form to another
Please just look up stuff about helium and put it in your own words 3-5 parts ill give brainly
Answer:
Element Name & Symbol: Helium, He
Element Family : Noble Gasses
Atomic Number: 2
Atomic Mass: 4
Answer from Gauthmath
What type of energy is associated with this movement of the molecules?
Answer:
electric
Explanation:
Why do scientists use models, and why do all models have limitations???
Plsss help! :) I will give brainliest!! :)
Answer:
Scientists use models to represent data/evidence. However, all models have limitations. However, models are simplified versions of reality, and can't be totally accurate in representation.
Hope this helps :)
Answer:
Since models are simpler than real objects or systems, they have limitations. ... It may not predict the behavior of the real system very accurately. But the more computing power that goes into the model and the care with which the scientists construct the model can increase the chances that a model will be accurate.
If there is not one scientific method, then what do all scientists have in common???
Plsss I will give brainliest, and 12 points !!
Answer:
One thing that all scientists have in common is that they find problems in the world, and attempt to seek answers to those problems. Everything that scientists do begins with observations, leading to questions.
Let me know if this helps!
While no single scientific method is uniformly followed by all scientists, there are certain common aspects and concepts that scientists share in their search of knowledge and understanding.
These are some examples:
Scientists rely on empirical evidence gathered via observation, experimentation, and measurement.
Systematic and Objective Investigation: Scientists explore and analyse events using systematic and objective approaches.
Scientific discoveries should be repeatable, which means that other researchers should be able to replicate the tests and achieve identical results.
Thus, although scientists' methodologies and approaches differ between fields, these basic principles drive their research and contribute to the collective growth of scientific knowledge.
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Organisms can either be made of one cell or made of more than one cell
Answer:
The statement is true.
Explanation:
Organisms can be unicellular (made up of one cell) or multicellular (consisting of more than one cell).
I hope this helps in any way :)
Use complete sentences to explain how the mass of hydrogen is conserved during cellular respiration.
pls make it simple and not write a whole paragraph
Answer:
Explanation:
The mass of hydrogen is conserved during cellular respiration as it follows the Law of Conservation of Matter.
Answer:
the law of conservation of matter
Explanation:
The mass of hydrogen is conserved during cellular respiration as it follows the Law of Conservation of Matter.
The Law of Conservation of Matter states that the reactants must equal the products, which is demonstrated through the equation that demonstrates cellular respiration.
C6H12O6 + 6O2 -> 6CO2 + 6H20
This shows that hydrogen has been conserved throughout the entire process (H representing Hydrogen) as the product has the same amount of hydrogen as the reactants.
Quartz, or silicon dioxide (SiO2), is one of the most abundant minerals on Earth. The diagram shows the atomic arrangement of quartz.
Based on the diagram, which statement best describes the atomic arrangement of quartz?
Group of answer choices
An extended structure that is made of repeating patterns of atoms.
A repeating pattern of small molecules that can move freely past each other
Many different kinds of molecules tha combine to form an extended structure.
Many different kinds of atoms that can move freely past each other.
Based on the atomic arrangement of quartz, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.
What is quartz?Quartz is a hard crystalline mineral found within the Earth's crust and which is composed mainly of the mineral silica. Silica is mostly silicon(iv) oxide.
Quartz is colourless and its crystalline structure is of a hexagonal prism. The atoms are arranged in a regular repeating grid to form the hexagonal crystal.
Therefore, it is can be concluded that quartz is an extended structure that is made of repeating patterns of atoms.
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Hydrogen peroxide is commonly used to clean cuts and wounds. Its chemical formula is
H2O2. This compound has _____.
two atoms of hydrogen
three atoms of oxygen
three atoms of hydrogen
one atom of oxygen
Please help, take your time!
Answer:
two atom of hydrogen,two atom of oxygen
Select all that apply.
Which items are properties of bases?
soapy
sour
bitter
slick
skin damage
Please
Answer:
soapy and bitter
Explanation:
OK OK ONE MORE TRY
Draw an energy flow diagram showing the energy transformation from one form to another.
Sodium chloride (NaCl) is made from ___ of sodium (Na) and ___ of chlorine (Cl).
Blanks: One Atom and Two Atom
Answer:
one atom, one atom.
Explanation:
Sodium chloride is made from one sodium atom and one chlorine atom.
Sodium has a charge of +1, Chlorine has a charge of -1. These cancel each other out leaving only one atom for both sodium and chlorine.
Why do scientists need to be able to use math?
How is radiant energy from the microwave transformed into heat energy?
Radiant energy comes from gravitational and electromagnetic radiations. This energy from the microwave is transformed into heat energy by the faster-moving molecules.
What is energy conversion?Energy conversion is the process of transformation of the energy from one form to another that also follows the law of conservation of mass or matter. Radiant energy is the heat or energy that is given out by electromagnetic waves in the form of various waves.
This radiant energy has its own characteristics that differentiate it from other waves. The waves from radiant energy have a molecular speed that gets increased by the temperature and this increases collision and kinetic energy producing new substances and generating heat.
Therefore, the movement of particles in microwave transforms the radiant energy into heat energy.
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To make a 450g solution with a mass by mass concentration of 7%, how much salt and water do you need to mix?
Answer:salt: 31. 5g
water: 418. 5g
Explanation
Answer:
salt: 31. 5g
water: 418. 5g
Explanation:
What is the difference between data and evidence???
Helpppp! I will give brainliest! PLSSS!
Who ever knows about the helium product help me out!
Answer:
Discovery and Naming: The first evidence of helium was obtained on August 18th, 1868 by French astronomer Jules Janssen. While in Guntur, India, Janssen observed a solar eclipse through a prism, whereupon he noticed a bright yellow spectral line (at 587.49 nanometers) emanating from the chromosphere of the Sun.
What is one example of a scientific model? (this is science I don't know why can't find it on "pick a subject" so yeah)
Answer:
Explanation:
I’ll try helping
Elements in the same group have _____.
the same number of electron shells
the same number of protons
similar chemical properties
the same number of isotopes
Answer:
Element in the same group have similar chemical properties.
What makes a good scientific question???
Plsss help! I will give brainliest! :)
Answer:
A good question is testable, detailed, measured, and controlled.
Just let me know if you have any other questions.
PLZ HELP I WILL GIVE BRAINLY AND POINTS
Put the steps of the scientific method into the correct order.
Devise an experiment to prove or disprove.
State conclusions.
Conduct a literature search.
Define the problem.
Propose a hypothesis.
Answer:
1. Define the problem
2. Conduct a literature search
3. Propose a hypothesis
4. Devise an experiment to prove or disprove
5. State conclusions
Explanation: In order to begin an experiment, you must first define a problem or question that you will be answering. Then you must research the problem in order to form a hypothesis, or an educated guess. Then you should devise and execute an experiment to answer your question. The conclusions that you draw will either prove or disprove your hypothesis. Hope this helps!
Each element has a different:
number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons
Please take your time if needed!
Answer:
(C. Properties and characteristics.
Hope this helpos!
Explanation:
Please help with questions 11-13! I’ll give brainliest
01.03 Transformation of Energy)
What is energy? (science question , i'm on flvs so if you are too and in grade 7th and done this before i would be thankful if you'd answer <3, btw this is a guided notes)
Answer:
The capacity or power to do work, such as the capacity to move an object (of a given mass) by the application of force. Energy can exist in a variety of forms, such as electrical, mechanical, chemical, thermal, or nuclear, and can be transformed from one form to another.
Explanation:
Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or other various forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another.
I really hope this helped, please let this get a brainly :)
Why is it necessary to ensure that unreacted chlorine gas is passed into a fume cupboard when reacting with alumnium?
Draw an energy flow diagram showing the energy transformation from one form to another.
ANSWER FAST PLEASEEE
Energy transformations convert one form of energy into another form of energy such as in batteries where chemical energy is converted to electrical, light and heat energy.
What is energy transformation?Energy transformations are changes which occur between different energy forms such that one energy form is converted to another form of energy.
Some examples of energy transformation are as follows:
electric fan converts electrical energy to mechanical energy generators convert mechanical energy to electrical energy electric cookers convert electrical energy to heat energy. chemical energy in batteries converted to electrical, light and heat energyTherefore, energy transformation convert one form of energy into another form of energy.
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