Atoms & Elements
The smallest unit of an element that retains the properties of that element.
What is an atom?
A substance formed when two or more elements chemically combine.
What is a compound?
This substance makes up a large percentage of the human body and is essential for life.
What is water?
A substance with a pH below 7 is classified as this.
What is an acid?
The body's primary immediate energy molecule is known by these three letters.
What is ATP?
The positively charged particle found in the nucleus.
What is a proton?
This type of bond forms when electrons are transferred from one atom to another.
What is an ionic bond?
A substance that dissolves another substance is called this.
What is a solvent?
A substance with a pH above 7 is classified as this.
What is a base/alkaline substance?
This process occurs when the body maintains a relatively stable internal environment despite changes in the outside environment.
What is homeostasis?
The negatively charged particle that moves around the nucleus.
What is an electron?
This type of bond forms when atoms share electrons.
What is a covalent bond?
The substance being dissolved is called this.
What is a solute?
Normal arterial blood pH is maintained within approximately this range.
What is 7.35–7.45?
When ATP is used, the high energy bond releases this in response?
What is energy?
The particle in the nucleus that has no electrical charge.
What is a neutron?
Sodium and chloride combine to form this common compound.
What is sodium chloride (NaCl)?
A solution with a pH of 7 is considered this.
What is neutral?
This ion is considered the hydrogen atom eliminator.
What is the hydroxyl ion (OH-)?
This is how the body regenerates ADP to ATP.
What is eating and drinking?
The number of protons in an atom determines this.
What is the atomic number?
A bond involving the attraction between a positively charged hydrogen and an electronegative atom is important in the structure of this molecule.
What is a hydrogen bond?
These are the 5 roles that water plays in the human body.
What are: ideal lubricant, universal solvent, temperature regulator, part of chemical reactions, and protective?
The human body's normal pH allows it to remain in this state.
What is a slightly alkaline state?
When separated substances retain their original properties are in a _____________.
What is a mixture?