A polyatomic ion is seen as a molecule that has been ionized by gaining or losing electrons. In a polyatomic ion, the group of covalently bonded atoms carries a net charge because the total number of electrons in the molecule is...
Questions: 10 | Attempts: 57081 | Last updated: Mar 22, 2022
What is the name of this chemical? NH4+
Is chemistry your favorite subject from school? Take up this physical and chemical changes quiz to know how well you understand the difference. In this quiz, we’ll be looking at the two scientific topics of physics and...
Questions: 10 | Attempts: 51522 | Last updated: Mar 22, 2022
Classify the following as a physical or chemical change:
Tearing a piece of paper into 100 pieces.
This quiz can be used as a pre-test for a unit on atoms, molecules, elements, and compounds. The quiz will, along with a post-test, serve as a method to determine how much the students have learned after the science unit has been...
Questions: 10 | Attempts: 42141 | Last updated: Mar 22, 2022
All matter consists of particles called________________.