Q: Today, new elements are usually named after famous scientists. the names of the elements can be cumbersome to write in full, especially when combined to form the names of compounds. therefore, each element name is abbreviated as a one- or two-letter chemical this? Choices: - notation - title - shorthand - symbol A:
symbol

Q: An organism's unique role in the ecosystem is called its what? Choices: - focus - adaptation - purpose - niche A:
niche

Q: Q: What is the term for a solution that resists dramatic changes in ph? Choices: - inert - neutral - stable - buffer A:
A: buffer

Question: Q: Deposition refers to when a gas changes to what state? Choices: - half liquid half gas - liquid - plasma - solid A:
Answer: solid

*Question*
Q: What are composed of alternating positive and negative ions? Choices: - magnetic crystals - polar bonds - radioactive substances - ionic crystals A:
**Answer**
ionic crystals

(Question)
Q: What can be used to speed up biochemical reactions? Choices: - proteins - hormones - carbohydrates - enzymes A:
(Answer)
enzymes