Which of the following elements is less reactive than the others?
beryllium (be)
calcium (ca)
lithium (li)
magnesium (mg)

This is a mixture that has the same composition throughout.

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?