Science Chapter 15

Question 1

Balance the following chemical reaction: Zn+____HCL—>H2+ZnCla

Answer 1

2

Question 2

Electrochemical cell that generates electricity using substances that are continually replenished from an outside source is a ____ cell.

Answer 2

Fuel

Question 3

Reaction that can proceed in either direction are said to be

Answer 3

Reversible Reactions

Question 4

Which principle states that total mass of reactants is equal to the total mass of the products?

Answer 4

Law of conservation of mass

Question 5

Energy Carrier of the cell is the compound named?

Answer 5

ATP

Question 6

Statement that best describes the structure of DNA

Answer 6

2 backbones connect by base pairs from a double bond

Question 7

Molecule which is an acohol

Answer 7

Look at card 18….

Question 8

Which properties help explain the uniqueness of carbon?

Answer 8

Carbon has 4 valence electrons

Question 9

General term for a reaction in which electrons are transferred between atoms

Answer 9

Redox Reactions

Question 10

Lipids contains no double bonds

Answer 10

Saturated fat

Question 11

Name of H3O + Ion

Answer 11

Oxonium

Question 12

A slippery to touch as bitter to taste and turns litmus paper blue

Answer 12

Base

Question 13

Which molecule is used as a working copy of genetic information?

Answer 13

RNA

Question 14

Substance used to transport cholesterol thru the body

Answer 14

Lipoproteins

Question 15

Substance used for food storage in plants

Answer 15

Starch

Question 16

In a certain solution [H3O+] was 1x10 -4 mol/L after a reaction the pH increased by 6, what is the new pH?

Answer 16

10

Question 17

Which principle states that when an equilibrium is disturbed, the system will behave in a way in which partially offsets the disturbance?

Answer 17

Le Chateliers Principle

Question 18

What represents a combination reaction?

Answer 18

a+b—>ab

Question 19

General term for a substance that speeds up a chemical reaction but is not permanently changed or consumed in the reaction.

Answer 19

Catalyst

Question 20

Electrochemical cell designed to recharge with electricity from an outside source

Answer 20

Storage cell

Question 21

Which type of electrochemical cell uses an electric current to produce a chemical reaction?

Answer 21

Electric cell

Question 22

Which quantities decreases in every spontaneous reaction?

Answer 22

Useable energy

Question 23

Which actions would likely increase the rate of a chemical reaction?

Answer 23

Increase surface area

Question 24

Phopherous penta-chloride reacts with water to form phosphoric acid, according to the following reaction: PCI5+4H2O—>H3lo+5HCl what form of reaction is that?

Answer 24

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