Q: What are changes in makeup and chemical properties of matter called? Choices: - mineral changes - carbonate changes - radical changes - chemical changes A:
chemical changes

Q: When two electric contacts come together it completes a what? Choices: - charge - breaker - atom - cricuit A:
cricuit

Q: Q: The conservation of momentum principle can be applied to systems as different as a comet striking earth and a gas containing huge numbers of atoms and these? Choices: - particles - ions - protons - molecules A:
A: molecules

Question: Q: What part of the muscle fibers cause shortening and contraction? Choices: - fasciae - pores - collagen - myofibrils A:
Answer: myofibrils

*Question*
Q: What determines which type of precipitation falls in the atmosphere? Choices: - air density - moon phase - time of day - air temperature A:
**Answer**
air temperature

*Question*
Q: The sternum and 12 pairs of ribs with their costal cartilages make up what? Choices: - chest cage - the core - heart cage - thoracic cage A:
**Answer**
thoracic cage