Chemistry of Life Flashcards
All __ is composed of __ and each element is made up of __
Matter, elements, atoms
A proton is?
a positively charge particle
An electron is?
a negatively charged particle
A neutron has?
No charge
What are isotopes?
They are different forms of the same element that have the same number and different number of neutrons.
Chemical bonds are?
How elements interact with one another
What are the 4 types of bonds?
Ionic, covalent, hydrogen bonds and van der Waals
Why is water important?
It is essential to life, making it one of the most abundant molecules.
which type of bonding holds water molecules together?
polar covalent bonding
What type of chemical bond stabilizes the 3 dimensional shapes of nucleic acids and proteins
hydrogen bonds
How did the hydrocarbons found in petroleum products such as gasoline get their energy?
from fossilized molecules built up in previously existing living organisms
An isotope of sodium (Na) has an atomic number of 11 and a mass number of 22. How many neutrons does it have?
11
Why are amino acids called “amino acids?”
They are single molecules that contain both an amine group and a carboxylic acid group.
What level of protein structure is associated the alpha helix and beta-pleated sheet?
secondary
What type of chemical bond stabilizes crystals of table salt?
ionic bonds
