Anatomy Chemistry Review

Question #1 What has hydrogen bonds that form a crystalline structure? Clue: It floats

Answer Ice

Question #2 A boulder sitting at the top of a hill that is ready to roll down is considered what form of energy?

Answer Potential

Question #3 What type of bond forms the compound NaCl?

Ionic

Question #4 What do elements C, H, O, and N have in common?

They make up 96% of the human body.

Question #5 NaOH + HCl yields NaCl + H2O Is an example of which type of reaction?

Exchange or double replacement

Question #7 In a water molecule, the hydrogen and oxygen atoms are held together by a:

Answer Polar covalent bonds

Question #7 Two water molecules are held together by which type of bond?

Answer A hydrogen bond

Question #8 Riding a bicycle is which type of energy?

Mechanical

Question #9 Harnessing solar energy is the direct result of which type of energy?

Answer Radiant

Question #10 Chemical reactions that absorb energy and get cooler are:

Answer: Endothermic

Question #11 Unique substances that cannot be broken down any further without changing chemically are _______.

Answer: Elements

Question #11 These subatomic particles make up the mass of an atom and are found in the nucleus.

Answer: Protons and neutrons

Question #12 What is the valence of an element with atomic number of 7?

Answer: 5

Question #13 Sodium emits a “rotten egg” smell. What property is this?

Answer: A physical property

Question #14 Two solutions form a precipitate. What type of property is this?

Answer: A chemical property

Question #15 Molecules with carbon are said to be___________.

Answer: Organic

Question #16 What is the difference between a colloid and a suspension?

Answer: Colloids hold on to particles and suspension drop them

Question #17 Mixtures are ___________ combinations of substances.

Answer: physical

Questions #18 Compounds are __________ combinations of substances.

Answer: Chemical

Questions #19 What school event is there tonight?

Answer Open house

Question #20 2 Hydrogen atoms chemically combined to 1 oxygen is an example of a ____________ bond.

Answer Covalent

Question #21 How does your body decrease high acid levels?

Answer: It produces a buffer

Question #22 Molecules that hate water are said to be:

Answer: Hydrophobic

Question #23 AB yields A + B describes:

Answer A decomposition reaction

Question #24 Insects can walk on water because of water molecules stick to each other. This is known as________.

Answer Cohesion or surface tension

Question #25 Substances that are inorganic, ionically bonded, electrolytes, and cations other than H and OH are called_____________

Answer: Salts

Question #26 Substances that release H into solution are____________.

Answer: Acids

Questions #27 How much OH is in solution if the pH of a substance is 5?

Answer: 1 X 10 -9

Question #28 A biomolecule has twice as many hydrogen atoms as oxygen. What is it?

Answer: A carbohydrate

Question #29 A biomolecule has many times more hydrogen atoms as oxygen. What is it?

Answer: A lipid

Question #30 A biomolecule contains nitrogen. What is it?

Answer: A protein

Question #31 A biomolecule contains nucleotides. What is it?

Answer: A nucleic Acid such as DNA or RNA

Question #32 A biomolecule is not working. It was heated to high. What is it?

Answer An enzyme (protein)

Question #33 Two sugars are combined, what molecule is removed?

Answer water

Question #34 This molecule is a double helix, thymine, and contains deoxyribose for its sugar. What is it?

Answer DNA

Question #36 What is the process of combining two or more monomers together called?

Answer Either polymerization or dehydration synthesis.

Question #37 Breaking down macromolecules into smaller ones while replacing water molecules is called ____________

Answer Hydrolysis