Question

practice it!
select the statement(s) that are true about atoms.
atoms are not able to gain or lose electrons.
electrons have a negative charge.
protons have a positive charge.
all matter is made up of atoms.
most atoms are neutral because they have an equal number of electrons and protons.

Explanation:

• Atoms can gain or lose electrons (e.g., in ionic bond formation), so the first statement is false.
• Electrons are negatively - charged particles, so the second statement is true.
• Protons are positively - charged particles, so the third statement is true.
• All matter is composed of atoms (or combinations of atoms like molecules), so the fourth statement is true.
• In a neutral atom, the number of electrons (negative charge) is equal to the number of protons (positive charge), so the fifth statement is true.

Answer:

B. Electrons have a negative charge.
C. Protons have a positive charge.
D. All matter is made up of atoms.
E. Most atoms are neutral because they have an equal number of electrons and protons.