5 Written questions
5 Matching questions
- Describe two ways that atoms may combine with other atoms.
- Identify the 4 levels of protein structure.
- Define electrolyte balance.
- How does the hydrogen ion concentration compare between a solution of pH 6.4 and a solution of pH 8.42.
- What does the pH scale measure?
- a The body regularly gains and loses these electrolytes, but they must be present in certain concentrations, both inside and outside cells, to maintain homeostasis.
- b tracks the number of decimal places in a hydrogen ion concentration without writing them out.
- c Primary, Secondary, Tertiary, Quaternary
- d The solution at pH 6.4 has 100 times the hydrogen ion concentration of a solution at pH 8.42.
- e Two atoms of hydrogen can combine with one atom of oxygen to produce a molecule of the compound water.
Atoms of the same element combine, they produce molecules of that element.
5 Multiple choice questions
- The number of protons equals the number of electrons.
- Ionic: ions with opposite electrical charges attract
Covalent: a chemical bond between atoms that share electrons.
- Atoms that have the same atomic number but different atomic weight.
- they are chemicals that resist pH change. They combine with hydrogen ions when these ions are in excess or they donate hydrogen ions when these ions are depleted.
5 True/False questions
What is an Ion? → Atoms that have the same atomic number but different atomic weight.
What is a molecular formula? A structural formula? → Molecular: consists of the symbols of the elements in the molecule with numerical subscripts that indicate how many atoms of each element are present.
Structural: representation of the way atoms bond in a molecule.
What are the functions of DNA and RNA? → tracks the number of decimal places in a hydrogen ion concentration without writing them out.
Where are electrons, protons, and neutrons located within an atom? → the nucleus of an atom.
What is the difference between an electrolyte and a nonelectrolyte? → Electrolyte: substance that ionizes in a water solution
Nonelectrolyte: organic compounds that dissolve in water, usually do not release ions.