1
Omar is learning about the daily life applications of organic chemistry. His teacher gives the example of cooking oil. Which of the following is an organic compound found in cooking oils?
2
Patricia is exploring ionic equations. She writes the complete ionic equation for a reaction. What is the difference between a molecular equation and an ionic equation?
4
Which type of reaction can establish equilibrium?
5
Emma is studying exothermic reactions. She knows that burning methane is an exothermic reaction. Which of the following is a characteristic of exothermic reactions?
6
A supersaturated solution is:
7
Samir is learning about cations. He knows that sodium forms a cation with a +1 charge. How does sodium achieve this charge?
8
Lara is looking at a diamond ring and a pencil lead. She knows both contain carbon but have very different properties. The pencil lead contains which allotrope of carbon?
9
Chemical properties of elements depend mainly on: