# data[].attributes.attachment_link.title
مقياس الرقم الهيدروجيني: أساسيات

# data[].attributes.attachment_link.description
Test the pH of everyday liquids such as coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Investigate how adding more of a liquid or diluting with water affects pH.

# data[].attributes.attachment_link.title
مبادئ القوة و الحركة

# data[].attributes.attachment_link.description
Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.