(Question)
Q: What is a soft, gray, nontoxic alkaline earth metal? Choices: - pewter - magnesium - potassium - calcium A:
(Answer)
calcium

(Question)
Q: Ions that contain fewer electrons than protons have a net positive charge and are called what? Choices: - oxides - particles - anions - cations A:
(Answer)
cations

(Question)
Q: Alpha particles, beta particles, and gamma particles are major types of what? Choices: - visible light - sound waves - microscopy - radioactivity A:
(Answer)
radioactivity