Main Elements of Life Quiz

What is the difference Between an Atom, Element, Molecule and Compound?

Answer: Atom The collection of protons, Neutrons and electrons. The basic unit of chemical elements.

Answer: Element A collection of identical atoms. A single substance on the periodic table. (Chnops)

Two elements bonded together H2 O2 H20 co2 h202 etc. Answer: Compound Two elements bonded together H2 O2 H20 co2 h202 etc.

Answer: Molecule A large group of elements that are bonded together. The key is that there must be at least two different elements to be a molecule. Co2 H20 H2O2

Water is a Compound because: A. Made of one type of atom/element. B. It’s made of atoms of more that one type of element. C. It has unequal sharing of electrons. D. It has equal sharing of electrons.

B. It’s made of atoms of more that one type of element. Answer: B. It’s made of atoms of more that one type of element.

Carbon is an element because it is: A. Made of one type of atom. B. Made of more than one type of atom. C. Found in all living things. D. Found in all non living things.

A. Made of one type of atom. Answer A. Made of one type of atom.

What does CHNOPS stand for? A. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Silicon B. Carbon, Hydrogen, Nitrogen, Oxygen, Potassium, and Sulfur C. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sodium D. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur

D. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur Answer: D. Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur

What are the main elements of life?

Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur (CHNOPS) Answer: Carbon, Hydrogen, Nitrogen, Oxygen, Phosphorus, and Sulfur (CHNOPS)

Where can you find these CHNOPS elements?

Answer: Carbon – DNA, Sugar, any organic molecule Hydrogen – Gas found in the air Nitrogen – Occurs in all living things, found in plants to help them grow. Fertilizer Oxygen – In air & needed for animals to live and create energy Phosphorus – DNA, Cell Membrane Sulfur - Proteins

A. Hydrogen B. Oxygen C. Carbon D. Nitrogen What element is found in all organic compounds and often forms the backbone or the primary structure of these molecules? A. Hydrogen B. Oxygen C. Carbon D. Nitrogen

Answer: C. Carbon

A. Carbon B. Chlorine C. Iron D. Hydrogen Scientists have found geysers on one of Saturn’s moons.  The geysers release water vapor containing complex organic compounds, which may indicate the presence of life.  Which of the following elements is most likely found in the organic compounds in the water vapor? A. Carbon B. Chlorine C. Iron D. Hydrogen

Answer: A. Carbon

Label the following picture.

Answer: Mass Number/Atomic Number Element Symbol Element Name Atomic Mass

The atomic number of an element is the number of protons and therefore also the number of electrons in a neutral element while the atomic mass is the mass of protons plus the mass of neutrons averaged for all isotopes. True or False

Answer: True

Which of the following describes an Isotope? A. An atom with a different number of Neutrons. B. An atom with a different number of Electrons. C. An atom with a different number of Protons. D. An atom with a different number of Negtons.

A. An atom with a different number of Neutrons. Answer: A. An atom with a different number of Neutrons.

A. Atomic Number B. Atomic Mass What number changes on the Periodic Table when an Isotope forms? A. Atomic Number B. Atomic Mass

Answer: B. Atomic Mass

Determine the ratio’s of elements in the following examples! A. H2O2 B. C6H12O6 C. C10H14O D. C8H8

Answer: A. H2O2 – 2 Hydrogens and 2 Oxygens B. C6H12O6 – 6 Carbons, 12 Hydrogens, and 6 Oxygens C. C10H14O – 10 Carbons, 14 Hydrogens, and 1 Oxygen D. C8H8 – 8 Carbons and 8 Hydrogens