What are the correct answers for questions 39 and 40, concerning the stage between childhood and adulthood and the properties of anions?

Here are the answers to questions 39 and 40:

Question 39: The stage of development between childhood and adulthood in humans is known as:
The correct option is A.

• Adolescence is the transitional stage of physical and psychological development that generally occurs during the period from puberty to legal adulthood. It is the period between childhood and adulthood.
• Infancy is the period from birth to about 1 year.
• Puberty is a specific part of adolescence when a person becomes sexually mature.
• Teenage refers to the age group (13-19 years) which falls within adolescence.

The most accurate and encompassing term for the stage between childhood and adulthood is adolescence.

$$\boxed{\text{A. adolescence}}$$

Question 40: Which of the following statements is true of anions? They contain
The correct option is D.

• An anion is an atom or molecule that has gained one or more electrons, resulting in a net negative electrical charge.
• Protons carry a positive charge, and electrons carry a negative charge.
• For an atom to become negatively charged (anion), it must have more electrons than protons. Therefore, it has less protons than electrons.

$$\boxed{\text{D. less protons than electrons.}}$$