Elements and Compounds
What is the chemical compound for carbon dioxide?
CO2
What does the atomic number represent?
The number of protons.
True or false: Energy is released during catabolism.
True!
What is the body's most abundant compound?
Water.
What number indicates neutrality on the pH scale?
7!
What is a compound?
Two or more elements joined to form a chemical combination.
Atoms are electrically neutral particles, true or false?
True!
What are the subunits of carbohydrates?
Monosaccharides.
Organic compounds typically contain which element?
Carbon.
What is the pH scale?
A measure of acidity or basicity of a solution.
Name 3 major elements in the human body.
Oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus.
Name the three most important subatomic particles.
Protons, neutrons, and electrons.
What happens when catabolic reactions occur (the breaking down of larger food molecules)?
Energy is released.
Differentiate between a solvent and a solute.
A solvent is the dissolver and a solute is dissolved.
What element does acid release when in a solution?
Hydrogen.
What are the elements grouped by in the periodic table?
Chemical characteristics and the number of valence electrons in the outer shell.
What is the equation for mass number?
What does ATP stand for?
Adenosine Triphosphate.
Water consists of what type of bond?
A polar covalent bond.
What is pH?
The relative hydrogen ion concentration of a solution.
In the element hydrogen, what does the 1 and 1.008 represent?
1=Atomic number
1.008=Atomic mass
How many electrons occupy the inner energy level? The outer energy level?
2 inner
5 outer
What is the term to describe chemical reactions that join simple molecules together to form more complex biomolecules?
Anabolism.
What is a colloid?
A mixture where tiny particles are evenly dispersed throughout another substance, but are not fully dissolved like in a true solution.
What compound forms from an acid and base chemical interaction?
A salt.