An atom is made of protons and neutrons (in the nucleus) and electrons spinning around in orbital shells. The number of electrons always equals _____
the number of neutrons
the number of protons and neutrons
the number of protons
none of the above
the number of protons
Explanation:
Protons are positively charged and electrons are negatively charged. An equal number of protons and electrons ensure that the atom is electrically neutral. Neutrons have no electrical charge.
You might also like to view...
Deterioration of body systems, tissue, and functions:
a. sexually transmitted diseases b. allergies and inflammatory diseases c. degenerative diseases d. metabolic diseases
____________________ are rapidly dividing cells in the skin that take up pigment and die, pushing through the skin surface as a shaft of hair.
Fill in the blank(s) with the appropriate word(s).
Although symbiotic relationships between nitrogen-fixing bacteria and plants are rare, many plants have symbiotic relationships with
A. filamentous algae. B. mycorrhizal fungi in the soil. C. nematode worms in the soil. D. other plants. E. soil insects.
A(n) (symport/antiport/uniport) is a carrier protein that transports two substances in the same direction across a membrane
What will be an ideal response?