Atoms and Elements
Atomic numbers and properties
How are elements organized in the periodic table?
The volume and shape of a substance is fixed
What is a solid?
What is the formula to measure volume?
The attractive force that holds atoms together
What is a chemical bond?
The change of state from a solid to a liquid
What is melting?
These combine to make all the substances on Earth
What are atoms?
The state of matter that can change both shape and volume
What is a gas?
A measure of the amount of space an object take up
What is volume?
A pure substance made up of two or more different types of atoms joined by a chemical bond
What is a compound?
The change of state from liquid to gas
What is evaporation?
Atoms with the same physical and chemical properties
What is an element?
The state of matter that has a fixed volume but can change shape
What is a liquid?
What is weight?
A sample of matter that has specific chemical and physical properties, such as melting point, appearance, and reactivity
What is a pure substance?
The force created by the collisions of particles with other materials
What is pressure?
Elements organized in a column based on having similar physical and chemical properties
What is a group?
Solid, Liquid, and Gas
What are the three states of matter?
A measure of the amount of matter in an object
What is mass?
A substance in which the particles are arranged in an orderly, geometric, and repeating pattern
What is a crystal?
The total kinetic energy of all the particles in a substance
What is Thermal Energy?
The smallest element, having the atomic number 1
What is Hydrogen?
By observing how the volume and shape change
How is matter classified as a solid, liquid, or gas?
The ratio of the mass of a substance to its volume
What is density?
A main component of photovoltaic cells that is most efficient at converting sunlight to electrical energy but is expensive to use
What is crystalline silicon?
The process of a gas changing to a liquid
What is condensation?