Periodic Table
What is the 6th element on the periodic table?
Carbon
What is the most popular covalent bond?
Water or salt
What is the left side of the arrow called in an equation?
Reactants
What is the pH of water?
7
What is water made of?
Two hydrogen and one oxygen
What does the atomic number represent?
The number of protons.
What do hydrogen bonds bond together?
atoms, water, metal, or molecules
Molecules
What is the right side of the arrow called of an equation called?
Products
What is the pH of an acid?
1-7
What percent of the human body is water?
50 percent or more
Name 3 of the 7 noble gases.
Helium, neon, argon, krypton, radon, xenon
What do covalent bonds do?
Share electrons
What is a reversible reaction?
Proceed in both directions
What is the highest number in a pH scale?
14
Is water polar or nonpolar?
Polar
Which element is the most electronegative?
Oxygen, Fluorine, Potassium, or Copper
Fluorine
What is the rule that makes elements want a full 8 electrons?
Octet rule
What is synthesis reactions?
When two or more substances form a more complex substance.
What is an example of a solution that has a basic pH (real life example)?
Baking soda, blood, sodium hydroxide, borax, household ammonia, oven cleaner
What is a colliod?
Particles slightly larger than molecules can also become dispersed in water without settling out.
Who proposed that matter is composed of atoms?
John Dalton
When is an ion a cation?
When it has a positive charge.
What is a decomposition reaction?
A breakdown of a complex substance into two or more simpler substances.
What does pH stand for?
The power of hydrogen
What are two properties of water?
Strong polarity, high specific heat, high heat of vaporization, cohesion, reactivity