Up quark
$11.99
No, it is not an upside-down carrot! A tiny little point inside the Proton and Neutron, it is friends forever with the Down Quark. UP QUARK is also part of the Everyday Matter 6-pack and the Quark 6-pack.Approximately 2 oz (57 gm); 3 inches (6 cm) across.For ages 5 and up as it contains glued-on/small parts. CATEGORY: QUARKS
Show More
Show Less