Question | Answer |
What does frequency of a sound wave determine? | Pitch |
A wave will travel only as long as it has ... | Energy |
List the Electromagnetic Spectrum in order from longest wavelength to shortest. | Radio waves, Microwaves, Inferred rays, Visible light, Ultraviolet rays, X-rays, and Gamma rays |
The waves with the longest wavelengths in the electromagnetic spectrum are? | Radio waves |
Which type of electromagnetic waves with the highest energy? | Gamma Rays |
Which type of electromagnetic radiation is used to kill cancer cells? | Gamma Rays |
What is the law that states matter can be neither created nor destroyed? | Law of Conservation of Matter |
How many Carbon atoms are in this glucose molecule?
C^6H^12O^6 | 6 atoms |
How many Sodium atoms are present in this molecule?
5Na^3PO^4 | 15 atoms |
A Calcium Sulfate molecule has 1 calcium (Ca) atom, 1 sulfur (S) atom, and 4 oxygen (O) atoms. What is its formula? | CaSO^4 |
When you add the charges of a compound, what do the charges need to equal? | Zero |
What are the reactants and products in this equation.
N + O^2 ---> NO^2 | Reactants- N and O^2
Product- NO^2 |
Balance this equation.
N^2 + H^2 ---> NH^3 | N^2 + 3H^2 ---> 2NH^3 |
What type of reaction is this equation?
MgCl^2 + 2LiBr ---> MgBr^2 + 2LiCl | Double Replacement |
What type of reaction is this equation?
C^6H^12 + 9O^2 ---> 6CO^2 + 6H^2O | Combustion |
What type of reaction is this equation?
Pb + FeSO^4 ---> PbSO^4 + Fe | Single Replacement |
What type of reaction is this equation?
CaCO^3 ---> CaO + CO^2 | Decomposition |
What type of reaction is this equation?
P^4 + 3Cl^2 ---> 2P^2Cl^3 | Synthesis |
What are the 7 diatomic elements? | Nitrogen, Fluorine, Iodine, Chlorine, Oxygen, Bromine, and Hydrogen |
What law says current is equal to the potential difference divided by the resistance? | Ohms Law. Potential Difference= Current x Resistance |
What is a material that allows electrons to move easily through it, examples are Copper and Silver (Metals) | Conductor |
What is a material that doesn't allow electrons to move easily through it, examples are plastic, glass, and wood (Non-metals) | Insulator |
2 positive or negative charges do what to each other? | Repel |
What is a path that allows only one route for an electric current? | Series Circuit |
What is a circuit that has two or more branches for electrons to follow? | Parallel Circuit |
What is the charge and mass of Neutrons? | Neutral. 1 amu |
What is the charge and mass of Protons? | Positive. 1 amu |
What is the charge and mass of Electrons? | Negative. No mass |
What is energy in the form of motion? | Kinetic energy. KE= 1/2 x Mass x Velocity^2 |
What is stored energy? | Potential energy. PE= Mass x Height x 9.8m/s^2 |
What type of energy is Chemical energy? Potential or Kinetic | Potential |
What type of energy is Sound, Light, Electromagnetic, Mechanical, and Thermal? Potential or Kinetic | Kinetic |
What are some other forms of energy? | Wind, Nuclear, Tidal, etc. |
What law states that energy cannot be created nor destroyed? | Law of conservation of energy |
As particles in an object move faster, the temperature ... | Increases |
What type of wave moves parallel to the medium, an example would be a slinky or sound | Compressional waves |
What type of wave moves perpendicular, an example would be ocean waves | Transverse waves |
What is the height of the wave from rest and measures the amount of energy the wave has? | Amplitude |
What is the lowest point of a wave? | Trough |
What is the highest point of a wave? | Crest |
What is the distance between a point on one wave to the identical point on the next wave? | Wavelength |
What is the formula for a wave? | Velocity= Wavelength x Frequency |
If the frequency is cut in half, the wavelength will ... | double |
What is the ability of two or more waves to combine and form a new wave? | Interference (constructive) |
What is it called when a crest hits a trough and they cancel each other out? | Destructive Interference |
What is the term for the returning light, an example is a mirror. | Reflection |
What is the term for the bonding light, an example is objects in water. | Refraction |
What is the formula for power? | Power= Voltage x Current |
What is the formula for voltage? | Voltage= Current x Resistance |
What is the formula for current? | Current= Voltage/Resistance |
What is the formula for resistance? | Resistance= Voltage/Current |
What is the net accumulation of electric charges on an object? | Static Electricity |
What is the tendency for a material to oppose the flow electrons and has a label of ohms? | Resistance |
What is the flow of electrons through a wire or any conductor and has a label of amps? | Current |
What produces electrical current by rotating a loop wire in a magnetic field? | Generator |
What can increase or decrease the voltage of an alternating current? | Transformer |
What is a reversing switch in a motor that rotates with an electromagnet? | Commutator |
What kind of current goes in one direction? | Direct Current |
What kind of current reverses its direction? | Alternating Current |
What kind of object is magnetic all the time? | Permanent Magnet |
What changes electrical energy into mechanical energy? | Electric Motor |
What is the process by which moving a wire through a magnetic field produces an electric current? | Electrical Induction |
What are some examples of chemical symbols? | Cl, H, F, He, H, and Sn |
What are some examples of chemical formulas? | CO^2, H^2O, and SO^4 |
What is the subscript used for in chemical formulas? | Number of Atoms |
What are coefficients used for in chemical reactions? | Number of units |
What makes an element chemically stable? | Must have a full outer shell |
What makes a compound chemically stable? | It has a neutral charge |
What is the type of bond that transfers electrons? | Ionic bond |
What is the type of bond that shares electrons? | Covalent bond |
How many atoms of Chlorine are there in this formula?
Ca(ClO^3)^2 | 2 atoms |
Name this compound: Mg(SO^4) | Magnesium Sulfate |
What makes a chemical equation/reaction balanced? | When there is the same amount of electrons on each side of the yields sign |
What are the substances to the left of the reaction arrow called? | Reactants |
What are the substances to the right of the reaction arrow called? | Products |
Which law states that the number of atoms on the reactants side will equal the number of atoms on the products side? | Law of Conservation of Mass |
What speeds up a reaction? | Catalyst |
What slows down a reaction? | Inhibitor |
What 3 forms do solutions come in? | Solid, Liquid, and Gas |
What molecule is positively charged at one end and negatively charged at the other end? | Polar Molecule |
What is the maximum amount of a solute that can be dissolved is a given amount of solvent at a given temperature? | Solubility |
What describes how much solute is present in a solution compared to the amount of solvent? | Concentration of a solution |
What is a substance called when it contains extra H+? | Acid |
What is a substance called when it produces extra OH-? | Base |
What are some examples of an Acid? | Lemon Juice, Soda, and Vinegar |
What are some examples of a Base? | Baking Soda, Soaps, and Ammonia |