This state of matter has a definite shape and volume.
What is a solid
100
Define a "solution."
What is a mixture in which a material is dissolved.
100
The subatomic particles (the parts) of an atom.
What are protons, neutrons, and electrons.
100
In this reaction, a solid becomes a liquid when heat energy is added. (Chemical or Physical)
What is a physical reaction.
100
The chemical symbol for H.
What is Hydrogen.
200
This state of matter has no shape or volume.
What is a gas
200
This is the difference between a solution and a suspension.
What is a solution has a dissolved substance (solute) and a suspension has a solid that is not dissolved.
200
The inner part of an atom, composed of protons and neutrons.
What is the nucleus.
200
In this reaction, a substance changes color and a burning smell is released. (Chem or Phys)
What is a chemical reaction.
200
The number of protons and also the number of electrons.
What is the atomic number?
300
This is the phase change that occurs when a liquid becomes a solid.
What is freezing
300
Solute and solvent
What are the two components of a solution?
300
The charge of an electron.
What is negative.
300
In this reaction, there is a temperature decrease and a gas is produced. (Chem or Phys)
What is a chemical reaction.
300
The number of protons plus neutrons.
What is the atomic mass?
400
This is the state of matter in which molecules are the most dense.
What is a solid.
400
A type of mixture in which large particles "settle" over time.
What is a suspension?
400
The charge of a neutron.
What is no charge or neutral.
400
List at least 4 indicators of a chemical change.
What are color change, gas is produced, smell is produced, the reaction is irreversible, temperature change (without cooling or heating,).
400
The period or shell number.
What tells you the number of shells an atom has?
500
List the 3 states of matter in order from the lowest to the highest energy level.
What is solid, liquid, gas, (and plasma)
500
Two or more atoms chemically combined.
What is a compound?
500
Atoms share these when they bond.
What are electrons?
500
In a chemical reaction, CaOH (calcium hydroxide) and CO2 (carbon dioxide) are _________, CaCO4 (chalk) and H20 (water) are __________.
(products, reactants)
What are reactants and products
500
The valence (or electrons available for bonding) in Oxygen.