Whats the Matter?
True of False
Matter Cannot be destroyed, nor created.
True!
All matter is believed to have been created during the creation of the universe.
What are the subatomic particles that make up an atom?
BONUS: What are these particles' charges.
Nucleus: Neutral charge
Proton: Positive charge
Electron: Negative charge
The table in which all known elements are categorized is called the what?
BONUS: How many known chemical elements are there?
The Periodic Table
BONUS: 118 elements
Which is a compound and which is a substance?
1. I cannot be broken down any further through chemical means.
2. I can be broken down further through chemical means.
1. Substance
2. Compound
Energy is anything that allows something to do what?
WORK
Liquid.
The scientist who first discovered electrons was who?
BONUS: What was the name of the experiment that proved this?
Joseph John Thompson with his Cathode Ray Experiment
BONUS: the Plum Pudding model
True or False
Elements cannot be divided into anything smaller than themselves.
True
Atoms form molecules by bonding with one another. They do this by either giving away or sharing what subatomic particle?
Electrons
What are the two main forms of energy, and how are they created
Kinetic Energy: Created by moving objects
Potential Energy: Stored energy that has the potential to be released.
Name the following terms:
1. I say how many things are inside something.
2. I say how many things can fit inside something.
3. I say how packed things are inside something.
1. Mass
2. Volume
3. Density
In this experiment, Rutherford discovered that the atom was mostly empty space, with a dense nucleus and electrons orbiting around it.
What was the name of the experiment?
The Gold Foil Experiment
What determines the following aspect of an element:
Its Atomic Number:
Its Atomic Weight:
Atomic Number: The number of protons
Atomic Weight: The mass of both protons and neutrons in the atom.
The electrons that are used for bonding are found in the outermost shell of the atom known as the what?
BONUS: What is the name of the diagram that shows the number of electrons within an atom's valence shell?
The Valence Shell
BONUS: The Lewis Dot Diagram
If the AVERAGE KINETIC ENERGY of something increases, what also increases?
Plasma
The number of what subatomic particles determine which element the atom belongs to?
The number of protons
When an atom has a different amount of protons and neutrons, it is called a what?
BONUS: A neutral atom that has either gained or loss an electron is known as a what?
Isotope
BONUS: Ion
From the Chemical Formula below, which are the reactants, and which are the products.
CH4+2O2 = CO2 + 2H2O
Reactants: CH4 & 2O2
Products: CO2 & 2H2O
Which of these chemical reactions is Exothermic, and which one is Endothermic:
Photosynthesis
Cellular Respiration
Photosynthesis: Endothermic, energy is absorbed.
Cellular Respiration: Exothermic, energy is released.
MATH QUESTION!
A block of iron has a density of 7.86 g/cm3 and a volume of 24 cm3. What is the block’s mass?
Mass = 188.64 grams
Even smaller than protons and neutrons, these Elementary Particles make up subatomic particles in sets of either 3 or 2. What are the names of these elementary particles?
Quarks
Which out of the THREE MAIN types of radiation have the highest penetrating power, and which one has the highest ionizing potential?
Highest Penetrating Power: Gamma Radiation
Highest Ionizing Potential: Alpha Rays
MATH PROBLEM:
Balance the following chemical equation
N2+H2O -> NH3 + O2
2N2+6H2O -> 4NH3 + 3O2
What equation do we use if we want to convert mass into energy?
E=mc2