<h3>
Question #1:</h3>
False.
Melting is a type of chemical change.
<h3>Question #2:</h3>
True.
If the substance's atoms change in any way, it is a chemical change.
<h3>Question #3:</h3>
True.
If a substance is broken or torn, it's still the same substance. (Take tearing paper, for example)
<h3>Question #4:</h3>
False.
Take boiling water for example, when you boil water, it is still water, right?
<h3>Question #5:</h3>
False.
<em><u>Every</u></em> chemical or physical change in matter includes change in energy. <u><em>Not most.</em></u>
<h3>
Question #6</h3>
True.
Hydrogen peroxide (H2O2), has turned into water (H2O) and oxygen (O). The substance has change chemically, therefore it is an chemical change.
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I hoped this helps! If you have any questions, feel free to ask! ^^
Answer:
First Part: branched chain, cycloalkane, straight chain
Second Part: straight chain, branched chain, cycloalkane.
Explanation:
Edg 2021
Answer:
This question is incomplete
Explanation:
This question is incomplete. However, the element X with the atomic number of 18 is Argon (Ar) while the next element (element Y) in the periodic table, with atomic number 19, is potassium (K).
Element X is found in the group zero (also called group 18 and elements found therewith are referred to as noble gases) of the periodic table while element Y is found in group 1 (elements found here are referred to as alkali metals).
Element X has a completely filled outermost shell while element Y has one electron in its outermost shell.
Element X is a metal while element Y is a nonmetal.
A solution of sucrose in water has a boiling point that is HIGHER THAN 100 DEGREE CELCIUS. Impurities in water usually raise the boiling point of water making the water to boil at an higher temperature than 100 degree Celsius. The raise in the boiling point of water depends on the concentration of sucrose that is added to the water.
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