Atomic Structure
What does the center of an atom contain?
Protons and Neutrons
What is formed when 2 elements combine chemically?
compound
4. A teaspoon of sugar dissolves when mixed in a cup of hot water. This process produces a solution. The sugar is classified as a _________.
solute
The movement of the liquid in a thermometer shows changes in temperature. As temperature increases, what happens to the molecules in a liquid?
They move faster and spread farther apart
What is the highest point of a transverse wave called?
crest
It cannot be broken down into smaller components through chemical reactions and it is found on the Periodic Table.
element
What does the correct dot diagram for Boron in Group 13?
-
B -
-
What 2 things make up a solution?
solutes and solvents
What type of heat transfer does a circular motion in a liquid represent?
conduction
What is the relationship between frequency and wavelength?
A wave with a short wavelength will have a high frequency
This is a negative charge. It orbits around the nucleus.
an electron
A force that holds 2 atoms together.
chemical bond
List the following from most acidic to least acidic.
Hand Soap - pH 10
Orange Juice - pH 3.5
Coffee - pH 5
Orange Juice, Coffee, Hand Soap
The sun transferring thermal energy is what type of heat transfer?
radiation
A wave has a speed of 12 cm/s and a frequency of 3 Hz. What is the wavelength of the wave?
speed = wavelength x frequency
4 cm
What is the smallest possible particle that can display all of the physical and chemical properties of lithium?
lithium atom
17. Gasoline provides the energy that powers many car engines. In an engine, gasoline and oxygen are mixed together and burned, creating carbon dioxide gas and water vapor. The process releases energy that the engine uses to turn the wheels. In this example, gasoline and oxygen are what?
Reactants
What is the change of energy from 1 form to another?
energy transformation
The transfer of heat confirms what law?
the law of conservation of energy
What type of wave interaction is the bending of a wave caused by a change in its speed as it moves from 1 medium through another?
refraction
metal
The number of atoms that you begin with in a chemical reaction must be must be the same as the number you finish with. What law justifies this statement?
The law of conservation of mass
A ball is on the top of a hill. Someone pushes it and stops at the bottom of the hill. Where is there the most potential energy?
on the top of the hill
What type of correlation does the temperature of a gas and the speed of the molecules in the gas have?
positive correlation
(as the temperature increases, the speed of the molecules increase)
What type of energy is transferred by vibrational waves?
sound