Answer:
Explanation:
The objective lens gather light from the specimen, magnifies the image of the specimen and projects the magnified image into the body tube. The ocular lens magnifies the image. It contains a measuring scale called a ocular micrometer.
What is the difference between data and evidence???
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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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Why do scientists use models, and why do all models have limitations???
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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.
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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.
Why do scientists need to be able to use math?
How is the sun related to nuclear, radiant, and heat energy?
Answer:The sun creates energy through nuclear fusion. Kinetic energy creates heat and light.
Explanation:
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.
If there is not one scientific method, then what do all scientists have in common???
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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.
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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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What makes a good scientific question???
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Answer:
A good question is testable, detailed, measured, and controlled.
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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. State problem
2. Form hypothesis
3. Conduct experiment
4. Interpret data
5. Draw conclusion
Explanation:
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.
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Explanation:
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
Landon's new toy arrived in the mail covered in foam packing peanuts. The foam packing peanuts have a mass of 30 g and a volume of 60 cm3. What is the density?
2 g/cm3
180 g/cm3
0.5 g/cm3
2
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:
The chemical formula for sulfuric acid is H2SO4. In one molecule of sulfuric acid, there are _____.
two atoms of helium
two atoms of oxygen
four atoms of oxygen
four atoms of sulfur oxide
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Answer:
four atoms of oxygen
Explanation:
two atoms of hydrogen
one sulphur atom
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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Please help with questions 11-13! I’ll give brainliest
Choose all the answers that apply.
Nitrogen has an atomic number of 7. Its atomic mass is 14. Nitrogen has _____.
seven electrons
seven neutrons
seven electron shells
23 neutrons
14 electrons
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What type of energy is associated with this movement of the molecules?
Answer:
electric
Explanation:
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).
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How is science different from other ways of learning about the world??? PLSS HELPP ASAPPP! :)
Answer:
Science does not change across region.
Explanation:
Regardless of language barriers or methods of learning, science is the study of fundamental concepts that explain how our world and the universe works.
