Q: Q: What part of an atom is positive due to the presence of positively charged protons? Choices: - Neutron - Proton - Electron - nucleus A:
A: nucleus

Q: Q: Lymphoma is a cancer of a type of what type of cells, called lymphocytes? Choices: - lung cells - brain cells - red blood cells - white blood cells A:
A: white blood cells

Q: Q: Chemical reactions that consume energy are called what? Choices: - exothermic reactions - inefficient reactions - greedy reactions - endothermic reactions A:
A: endothermic reactions

Q: Q: What changes the chemical composition of a substance and can only occur through a chemical reaction? Choices: - carbon changes - Oxygen Changes - mineral changes - chemical changes A:
A: chemical changes