Answer:The sun creates energy through nuclear fusion. Kinetic energy creates heat and light.
Explanation:
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???
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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.
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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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 is the difference between data and evidence???
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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
Select all that apply.
Which items are properties of bases?
soapy
sour
bitter
slick
skin damage
Please
Answer:
soapy and bitter
Explanation:
Each element has a different:
number of protons and electrons
atomic mass and weight
Properties and characteristics
number of neutrons
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Answer:
(C. Properties and characteristics.
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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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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.
What makes a good scientific question???
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Answer:
A good question is testable, detailed, measured, and controlled.
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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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