Chapter 2 Chemistry: Study Guide #2 A&P I

What are elements?

• Made up of atoms and can be broken into a simpler substance by chemical change

• Made up of atoms that can be broken into a complex substance by mechanical change

• Made up of atoms that can be broken into a complex substance by chemical change

• Made up of atoms that cannot be broken into a simpler substance by mechanical change

What elements make up most of the human body?

• Carbon, Oxygen, Phosphorus, Potassium

• Oxygen, Sulfur, Carbon, Hydrogen

• Hydrogen, Oxygen, Nitrogen, Carbon

• Nitrogen, Carbon, Sodium, Oxygen

• Carbon, Hydrogen, Oxygen, Magnesium

What is an atom?

• Smallest particles of an element with properties, nucleus contains protons (p-) & neutrons (neutral), and electrons (e-) orbit

• Smallest particles of an element with properties, nucleus contains protons (p+) & neutrons (neutral), and electrons (e-) orbit

• Smallest particles of an element with properties, nucleus contains protons (p+) & neutrons (n-), and electrons (e+)

• Smallest particles of an element with properties, nucleus contains protons (p+) & neutrons (n-), and electrons (neutral) orbit

What are the characteristics of protons, neutrons, and electrons with regard to weight and charge?

• Protons have a +1 charge, 1 amu, and located in the nucleus

  Neutrons have a -1 charge, 1 amu, and located outside the nucleus

  Electrons have a +1 charge, 0 amu, and located outside the nucleus

• Protons have a +1 charge, 1 amu, and, located outside of the nucleus.

  Neutrons have no charge, 0 amu, and located inside the nucleus

  Electrons have a -1 charge, 1 amu, and located outside of the nucleus

• Protons have a +1 charge, 1 amu, and located in the nucleus

  Neutrons have no charge, 1 amu, and located in the nucleus

  Electrons have a -1 charge, 0 amu, and located outside of the nucleus

• Protons have a +1 charge, 1 amu, and located in the nucleus

  Neutrons have -1 charge, 1 amu, and located outside the nucleus

  Electrons have a -1 charge, 0 amu, and located in the nucleus

Define atomic number, atomic mass, and atomic weight.

• Atomic number: The number of electrons that determine the element

  Atomic mass: Represents the mass of an isotonic or atom

  Atomic weight: Protons + Neutrons (neutrons vary), weight of an element

• Atomic number: The number of protons that determine the element

  Atomic mass: Represents the mass of an isotope or atom

  Atomic weight: Protons + Neutrons (neutrons vary), total mass of an element

• Atomic number: The number of protons that determine the element

  Atomic mass: Represents the mass of an isotope or atom

  Atomic weight: Protons + Neutrons (neutrons vary), weight of an element

• Atomic number: The number of neutrons that determine the element

  Atomic mass: Represents the weight of an isotope or atom

  Atomic weight: Protons + Neutrons (neutrons vary), mass of an element

Answer explanation

Mass is how much matter an object contains; Weight is the force exerted by gravity

What is the definition of a molecule?

• Three or more chemically bonded atoms, smallest unit of a chemical compound

• Four or more chemically bonded atoms, simplest unit of a chemical compound

• Three or more chemically bonded atoms, simplest unit of a chemical compound

• Six or more chemically bonded atoms, most complex unit of a chemical compound

Answer explanation

The best answer for: Three or more chemically bonded atoms, smallest unit of a chemical compound, either ways.. you got it correct :)

What is a chemical formula?

• The amount of atoms in a particular that are in a certain chemical compound

• Solve for it.

• 

Answer explanation

Honestly, the answer choices are weird, but I hope you got it right :)

What chemical formula is C₆H₁₂O₆

• Hexane

• Butane gas

• Methane gas

• Glucose

Answer explanation

What chemical formula is CH₄

• Carbon dioxide

• Methane gas

• Ethane gas

Answer explanation

Methane gas diagram

What chemical formula is NH₃

• Nitroxide

• Nitrous acid

• Ammonia

• Nitrite

Answer explanation

Ammonia molecule