The correct answer for this question is this one: "<span>In transpiration, because some of its properties change, water undergoes a physical change but keeps its identity. In photosynthesis, because its identity changes, water undergoes a chemical change</span>. "
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Between 1858 and 1920, Mars was thought by many, including some scientists, to be very similar to Earth, only drier with a thick atmosphere, similar axial tilt, orbit and seasons as well as a Martian civilization that had built great Martian canals.
Answer:
A hypothesis is something you can test a theory is just a thought that you have.
Answer:
a) Covalent
b) Metallic
c) Ionic
Explanation:
Here, we want to match the elements to the correct bond types
a) Nitrogen and oxygen
These are elements with similar electronegativities. Due to this, they tend to bond by covalent bonding wherein electrons are shared
b) Gold and gold
This is also a type of covalent bonding called metallic bonding. It is called metallic as it is between two metallic atoms
c) Lithium and Chlorine
What we have here would be an ionic bonding. This is because we are having a metallic atom bonded to a non-metallic atom. It is happening because of the large electronegativity gap between the two elements. In the real sense, lithium would donate the single electron in its valence shell to the valence shell of chlorine that needs an extra one
