Basic Chemistry

Which of the following sub-atomic particle has positive charge?

• Electron

• Proton

• Neutron

• None of the above

Chemical Formulas ...

• are written in alphabetical order 
• represent the destruction or creation of atoms 
• represent how atoms are arranged in a chemical reaction 
• None of the above

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?

• 19
• 39
• 20
• None of the above

Explain this graph

• A catalyst is used to speed up the reaction rate
• The catalyst provides a short cut to the products
• The red line shows how the catalyst saves energy 
• All of these choices

What is the law of Conservation of Mass?

• A measure of how much mass is created or destroyed. 
• Mass can neither be created nor destroyed during a chemical reaction. 
• Mass remains same in all conditions

• None of the above

A catalyst  

• is added to a reaction to make it slow down 
• breaks apart and is changed 
• provides an energetic short cut to the products 
• None of the above