Answer:
C. Mechanical energy transforms into chemical energy.
Explanation:
Mechanical energy is used to chew the food, which is made up of chemical bonds. When we chew, those bonds break, releasing chemical energy that we utilize and consume.
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An element has a metallic-gray appearance. It also has the properties of both a metal and a nonmetal. In which section of the table would you find this element?
Select one:
3
4
1
2
Answer:
you would find it in section 3 as these are semi-metals
Explanation:
Answer:
The answer is where the metalloids are located
Explanation:
What geometric shape is the carbon dioxide molecule? The Lewis structure for CO2 contains two double bonds.
How many atoms of Pb are there?
Answer: i believe it is
602,000,000,000,000,000,000,000 atoms
Explanation:
6.02×1023 atoms/mole
A prospector pans for gold in a stream.
Which term best describes what is in his pan when he scoops up part of the stream bed?
mixture
pure substance
compound
element
Answer:
Mixture
Explanation:
When a prospector scoops up part of the stream bed, the pan contains stream sediments.
The term that best describes what is in his pan when he scoops up part of the stream bed is the mixture. Thus, the correct option for this question is A.
What is a Stream bed?A stream bed may be defined as the strait extremity of a stream or river through which the physical confine of the normal water flow. It is a type of channel significantly occupied by a stream.
According to the context of this question, when a prospector scoops up part of the stream bed, the pan contains stream sediments, which implies that the mixture contains stream sediments or contamination.
Therefore, the mixture is the term that best describes what is in his pan when he scoops up part of the stream bed. Thus, the correct option for this question is A.
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Match each type of chemical bond with its properties. Drag the items
rect location on the right.
covalent bond
crystalline
metallic bond
ductile
ionic bond
poor thermal conductivity
molecular compounds
hard and brittle
electron sea model
Answer[tex]__________ is a set of _____ or combination of __________ alleles responsible for an _________ of a trait.[/tex]:
Explanation:
The bonds are formed by the valence electron of the atom. The covalent bonds show poor thermal conductivity and are hard and brittle substances. Thus, options 1. c and e, 2. b and f, 3. a and d are correct.
What are chemical bonds?Chemical bonds are the linkages formed between the atoms of the same or different element by transfer, sharing, and moving electrons of the valence shell of the orbital.
The covalent bonds are formed by sharing the valence electron with the atoms that look hard and brittle and are poor thermal conductors. Thus, options c and e are correct.
The metallic bonds, on the other hand, are formed by the free movement of the electrons in the structures that are ductile and are represented by the electron sea model. Thus, options b and f are correct.
Lastly, the ionic bonds are created by the transfer of the valence electron from one to another atom. They form crystalline structures and molecular compounds with cations and anions in them. Thus, options a and d are correct.
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