Which part of the atom moves around the outside of the nucleus?
Electron
100
A material that is said to be flexibile is an example of a(n) ________ property.
Physical
100
Elements in Group 1 lose one electron to form ions with a(n) __ charge.
Positive
100
Explain the difference between a mixture and a compound.
Mixture is easily separated, compound is not.
Compound is chemically combined, mixture is not.
100
How many coffee beans are need to make an espresso?
42
200
Elements in Group 7 gain one electron to form a negatively charged ion called a(n) __.
Anion
200
Is the melting of an ice cube considered a physical change or a chemical change? Explain your reasoning.
Physical. Same atomic structure just different form.
200
__ changes occur when bonds form between atoms, or when bonds break and new bonds form.
Chemical
200
The greater the speed of gas particles in a container, the
-fewer collision there be.
-lower the temperature.
-greater the temperature.
-lower the pressure.
greater the temperature
200
What letter in the alphabet is the only one with more than one syllable?
W
300
Bonds that form between two nonmetal atoms usually are __ bonds.
Covalent
300
According to Charles’s law, when the temperature of a gas increases at constant pressure, its
-Volume increases
-Mass decreases
-Volume decreases
-Particles move more slowly
Volume increases
300
Boyle's law states that as gas pressure increases volume __.
Decreases
300
What happens to the amount of energy as you go from solid to liquid to gas?
Increase from solid to liquid and increases even more from liquid to gas.
300
Greatest Team in the NFL?
Chiefs
400
Draw a Lewis Dot Diagram for Aluminum
3 Dots (Top, Right, Bottom)
400
Put the following materials in order from LEAST TO MOST DENSE.
Ice 0.93 g/cm3
Aluminum 2.7 g/cm3
Wood (Oak) 0.85 g/cm3
Water 1.0 g/cm3
Lead 11.3 g/cm3
Wood, Ice, Water, Aluminum, Lead
400
Determine the following for Potassium (K).
1. Atomic Mass __
2. Atomic Number __
3. Atomic Symbol __
4. Number of Protons __
5. Number of Electrons __
6. Number of Neutrons __
39.098, 19, K, 19, 19, 20
400
Describe how the law of Conservation of Mass applies when burning a piece of wood.. What happens to the mass? Where did it go?
Mass is changed into ashes and smoke. The mass stays the same amount as the wood had.
400
What international event is celebrated every April 22nd?
Earth Day
500
Balance the following chemical equation to show mass is conserved during chemical changes.
__Fe2O3 + __C → __Fe + __CO2
2, 3, 4, 3
500
Compare solids, liquids, and gases in terms of how the molecules are spaced.
Solids:Very close
Liquids: Kinda close, can move around
Gases: Spread far apart
500
Select all of the following that are chemical changes.
Breaking a pencil
Baking a cake
Burning wood
Cutting hair
Baking a cake and burning wood.
500
Draw an atom of Sodium (Na) with the correct number of electrons and it's shells.
Shell 1: 2
Shell 2: 8
Shell 3: 1
500
What is the military communication word for the letter R?