Q: Given the fact that: At higher concentrations, particles of reactants are crowded closer together, so they are more likely to collide and react. Answer the question: Ian sees an object with many colliding particles, and he compares it to another object with few colliding particles. Which is true about the objects the object with many colliding particles has a lower concentration of particles or the object with many colliding particles has a higher concentration of particles?
A: the object with many colliding particles has a higher concentration of particles

Q: Given the fact that: With a higher concentration of hydrogen ions, a solution is more acidic but has a lower pH. Answer the question: Dean wants his solution to be the least acidic possible, so his concentration of hydrogen ions will be lower or higher?
A: lower

Q: Given the fact that: In refraction of light, the greater the change in speed, the more light bends. Answer the question: When light travels faster, the light refracting bends more or less.?
A: more

Q: Given the fact that: Warmer molecules vibrate faster than cooler ones. Answer the question: Lisa is heating soup on the stove. The molecules will begin to vibrate slower or faster as the soup heats up?
A: faster