Podcast
Questions and Answers
Approximately how many elements occur naturally in the earth?
Approximately how many elements occur naturally in the earth?
What is a substance that is formed from atoms?
What is a substance that is formed from atoms?
Which statement about elements is true?
Which statement about elements is true?
What are electrons and neutrons?
What are electrons and neutrons?
Signup and view all the answers
What is an isotope?
What is an isotope?
Signup and view all the answers