Question

question 22 1 pts atomic mass is determined by the number of: protons and electrons. neutrons and electrons. neutrons, protons, and electrons. protons and neutrons. question 23 1 pts in the presence of a base, red litmus paper will: stay red. turn blue. turn green. turn yellow. question 24 1 pts the type of reaction in which substances are combined to form more complex substances is called a(n) ____ reaction. reversible exchange synthesis decomposition

Explanation:

• For Question 22: Atomic mass is the sum of protons and neutrons as electrons have negligible mass compared to them.
• For Question 23: Red litmus paper turns blue in the presence of a base due to its chemical - indicator property.
• For Question 24: A synthesis reaction combines substances to form more complex substances.

Answer:

Question 22: D. protons and neutrons
Question 23: B. turn blue
Question 24: C. synthesis