Show:
2.1 Atoms, Ions, & Molecules
2.2 Properties of Water
2.3 Carbon-Based Molecules
2.4 Chemical Reactions
2.5 Enzymes
100
What is the smallest basic unit of matter?
What is an atom?
100
Hydrogen bonds can form between regions of polar molecules that are...
What is oppositely charged (or positively and negatively charged)?
100
What is it about the Carbon atom that makes it unique?
What is it's bonding properties?
100
Chemical reactions change substances into different substances by what?
What is breaking and forming chemical bonds?
100
What is the effect of a catalyst on a chemical reaction?
What is "it decreases the activation energy"?
200
What cannot be broken down by ordinary chemical means?
What is an element (or an atom)?
200
The attraction among molecules of different substances is called...
What is adhesion?
200
Which category of carbon-based molecules includes sugars and starches?
What are carbohydrates?
200

Identify the reactants in the following chemical reaction: 

6H2O + 6CO2 → C6H12O6 + 6O2

What are 6H2O and 6CO2?

200
How do enzymes affect chemical reactions in living organisms?
What is they weaken the bonds in reactants?
300
What do you call atoms of different elements bonded together in certain ratios?
What is a compound?
300
Why is water necessary to your body?
What is "It dissolves and transports substances."?
300
Fats, oils, and cholesterol are all types of...
What are lipids?
300
What do the double arrows tell you about a reaction?
What is "has reached equilibrium"?
300
What are the specific reactants that an enzyme acts on called?
What is a substrate?
400
An ion is formed when an atom gains or loses...
What are electrons?
400
In a solution, which is present in the greater concentration?
What is a solvent?
400
Proteins are composed of which molecules?
What are amino acids?
400
What is the term for the amount of energy that needs to be added for a chemical reaction to start?
What is activation energy?
400
How do changes in temperature and pH decrease an enzyme’s activity?
What is by breaking hydrogen bonds?
500
Atoms connected by covalent bonds share this.
What are pairs of electrons?
500
A solution with a high concentration of H+ ions is...
What is very acidic?
500
DNA and RNA are two types of...
What are nucleic acids?
500
What is an exothermic chemical reaction?
What is "one that releases more energy than it absorbs"?
500
What are two ways a catalyst affects a chemical reaction?
What are 1) lowering the activation energy, 2) making the reaction go more quickly?