CHM 101 Click and continue This is a demo exam question to assess your preparedness for the exam. You can write it multiple times. Thank you for participating in the demo exam. Revisit the exercise at convenience CHM 101 Demo Exam 1 / 5 Catalyst lowers a. Temperature b. Mass c. Activation energy d. Pressure 2 / 5 Alpha particle is a. Helium nucleus b. Proton c. Neutron d. Electron 3 / 5 Catalyst a. Stops reaction b. Changes product c. Slows reaction d. Speeds reaction 4 / 5 Dynamic equilibrium occurs in a. Closed system b. None c. Open system d. Isolated 5 / 5 Metallic character decreases across a period a. Constant b. Random c. True d. False Your score is 0% Restart quiz Exit