Define a "compound"
What are two elements chemically combined
In this reaction, a solid becomes a liquid when heat energy is added. (Chemical or Physical)
What is a physical reaction.
The pH of water
What is 7
An example of a mixture
Many possible responses
How to calculate the number of neutrons
What is subtract the atomic number from atomic mass
An example of a compound
Many answers
List at least 2 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,) electrical energy is produced.
The smallest unit of matter
What is an atom
The compounds that are produced after a chemical reaction (reactants or products)
What are reactants and products
The electrons in Oxygen.
What is 8?