Questions with the keyword 'air'

• What does the particle formation look like in a sponge because even though it’s a solid it has loads of air holes in? by SMILEY_FACE_:) to Hephzi, Imogen, Jen, Jennifer, Tom Comments: (so far, 2s comments )
• Does air have any weight? by snowpea to Jen, Tom, Jennifer, Imogen, Hephzi Comments: (So far, one comment )