Periodic Table
What does the atomic number tell you?
Number of protons (and electrons, in a neutral atom)
Which element is Na?
Sodium
What is Magnesium?
Magnesium is a METAL
Melting ice cubes
Physical Change
(change of state)
Which side of a chemical equation are the products on? What about the reactants?
Reactants --> Products
(left) (right)
How many centimeters are in one meter?
100 cm = 1 m
(centi- means "hundred")
How are the elements organized on the Periodic Table?
They are in order of increasing atomic number
Which element has 16 protons?
Sulfur
Which type of element is most common on the Periodic Table?
Metal
Burning a wood in a fireplace
Chemical Change
(wood changes into new substances; ash, gas, and smoke)
What is the difference between Exothermic reactions and Endothermic reactions?
Exothermic - Energy (heat) is released
Endothermic - Energy is absorbed
Name all 7 continents on Earth.
North America, South America, Europe, Asia, Australia, Africa, and Antarctica
What is the name of Group 1?
Alkali Metals
Which element is located in Group 11, Period 6?
Gold
Are these properties of Nonmetals, Metals, or Metalloids?
Shiny, Ductile, and Conductive
Metal
Digesting food
Chemical Change
(food is chemically broken down into usable nutrients)
What is the Law of Conservation of Matter?
Matter cannot be created or destroyed
How many days does it take for the moon to cycle through all the phases?
Around 28 days
Name any one of the elements in the Halogen Family.
Fluorine, Chlorine, Bromine, Iodine, Astatine, Tennessine
What is the lightest Noble Gas?
Helium
Which is NOT a Metalloid?
Arsenic, Boron, Fluorine, or Silicon
Fluorine is a Nonmetal!
A banana turns brown and tastes sweeter when it ripens
Chemical Change
(sugars are broken down over time)
What coefficients are needed to balance this equation?
__ C2 + __ O2 --> __ CO2
1 C2 + 2 O2 --> 2 CO2
How long (in feet or inches) is an average adult's small intestine?
22 feet long!
How can you determine the number of neutrons in an element?
Atomic Mass - Atomic Number = Number of Neutrons
What is the most common element in the entire universe?
Hydrogen!
Hydrogen existed before any other elements. Hydrogen atoms fuse together in the centers of stars to make heavier elements.
Name at least two properties of Nonmetals.
Dull, Brittle, Poor Conductor, Low Boiling Point, Mostly Solid or Gas
Plants photosynthesize to create sugars
Chemical Change
(the molecules that are produced are different than what reacted)
What are the reactants and products of photosynthesis?
H2O + CO2 --> C6H12O6 + O2
Explain the difference between Potential Energy and Kinetic Energy.
Kinetic Energy is the energy of things in movement
Potential Energy is the stored energy; energy that has the "potential" to do work