Energy can be added or removed from a substance through a process called ___________.
What is conduction?
100
The density of a substance is the relationship between the ______ of the substance and how much space it takes up (volume).
What is mass?
100
These are made of extremely tiny particles called protons, neutrons, and electrons.
What are atoms?
100
This student went to Palestine recently.
Who is Solana?
200
This increases the speed of the molecules, which causes the molecules to move a little farther apart.
What is heating a liquid?
200
____________ occurs when molecules in a liquid gain enough energy that they overcome attractions from other molecules and break away to become a gas.
What is evaporation?
200
This can be used to measure the volume of a liquid.
What is a graduated cylinder?
200
The atomic number of an atom is equal to the number of ________ in its nucleus.
What is protons?
200
This student did a presentation on plutonium because its symbol is PU.
Who is Silas?
300
This is an real-life example of heating and cooling a liquid.
What is a thermometer?
300
_____________ is the process in which molecules of a gas slow down, come together, and form a liquid.
What is condensation?
300
An object will _______ if it is less dense than the liquid it is placed in.
What is float?
300
The electrons in the energy level farthest from the nucleus are called ________ electrons.
What is valence?
300
This person discovered the water displacement method.
Who is Archimedes?
400
In a _________, the atoms vibrate but stay in fixed positions because of their strong attractions for one another.
What is a solid?
400
This occurs when the molecules of a liquid slow down enough that their attractions cause them to arrange themselves into fixed positions as a solid.
What is freezing?
400
The density of water ___________ regardless of the volume.
What is stays the same?
400
The sharing of electrons between atoms is called a _________ bond, which holds the atoms together as a molecule.
What is covalent?
400
This was the most dense liquid we used in our density demonstration.
What is honey?
500
In a ____, the molecules have very weak attractions for one another.
What is gas?
500
This occurs when the molecules of a solid speed up enough that the motion overcomes the attractions so that the molecules can move past each other as a liquid.
What is melting?
500
The density of hot water is _________________ the density of cold water.
What is less than?
500
When an atom loses or gains an electron, it is called an _____.
What is an ion?
500
These are the names of Mrs. Jerome's fabulous co-teachers.