Jonathan is helping his mother make soap. She asked him to add the base to the mixture to help form the soap. He looks to the chemical closet and sees three bottles, one labeled NaOH, another labeled HCl, and the last one labeled HNO2. What is the chemical name for the correct compound Jonathan needs to add to the mixture?

What are scientists who study fossils called? ( a ) astronomers. ( b ) biologists. ( c ) geologists. ( d ) paleontologists.

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions