Lecture 2: Essential Chemistry Flashcards
A chemical element is also called an ___.
Atom
Bulk elements make up the majority of the atoms in your body. What are they?
CHON (Carbon, Hydrogen, Oxygen, Nitrogen)
What type of chemical bond transfers electrons from one atom to another? Salt is a good example molecule.
Ionic
What type of chemical bond shares electrons between two atoms? Sugars and proteins are good examples.
Covalent
Water contains ___ bonds within it, and shares ___ bonds with other water molecules.
Covalent; Hydrogen
A + B = C
In the chemical reaction above, what is (are) the reactant(s)?
A and B
A + B = C
In the chemical reaction above, what is (are) the end product(s)?
C
A + B = C
In order for this reaction to occur, it needs an input of energy. This reaction is called a ___ reaction.
Endergonic / Anabolic
C = D + E
When this reaction occurs, it releases stored energy. To completely describe this reaction, it is called a ___ reaction.
Exergonic / Catabolic
What part of the atom actually makes the chemical bond?
Electron
When discussing your diet, anything that is “essential” refers to ___.
Anything your cells are not able to make themselves, and therefore must be consumed.
The behavior of a molecule depends on its shape. Change its shape, and you impact its ability to function. True of False.
True
Water is a ____ molecule.
Polar
Compared to liquid water, ice has ___ (higher or lower) density.
Lower
Compared to liquid water, vapor has ___ (higher or lower) density.
Lower
