Q: What is the ph level of neutral, pure water? Choices: - six and a half - five - six - seven A:
seven

Q: What significant part of the cell do prokaryotic cells lack? Choices: - a cell wall - a ribosome - mitochondrial dna - a nucleus A:
a nucleus

Q: Q: What are the smallest particles of water called? Choices: - hydrogen - atoms - ions - molecules A:
A: molecules

Question: Q: What do you call reversible changes that do not change matter's chemical makeup or chemical properties? Choices: - potential changes - element changes - chemical changes - physical changes A:
Answer: physical changes

*Question*
Q: What is a gram stain used to identify ? Choices: - radioactivity - acids or bases - different types of liquids - different types of bacteria A:
**Answer**
different types of bacteria

*Question*
Q: What is the term for stored energy that an object has due to its position or shape? Choices: - kinetic energy - mechanical energy - vertical energy - potential energy A:
**Answer**
potential energy