Second Science
Rocks and mineral game:
http://gated.jason.org/digital_library/cfy/9576.aspx
Worm compost game: http://www.calrecycle.ca.gov/vermi/
Owl Pellet Virtual Dissection:
http://kidwings.com/nests-of-knowledge/virtual-pellet/
States of Matter games:
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_state.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/gases.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/8_9/solid_liquids.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/8_9/keeping_warm.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/7_8/characteristics_materials.shtml
Links for chemical engineering games:
http://www.bbc.co.uk/schools/scienceclips/ages/5_6/sorting_using_mate.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/6_7/grouping_materials.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/7_8/characteristics_materials.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/8_9/solid_liquids.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_state.shtml
Links:
Try learning about plants and polination by playing these games:
http://www.brainpop.com/games/buildatree/
http://www.colours.phy.cam.ac.uk/pollination-game
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/life_cycles.shtml
http://www.bbc.co.uk/schools/scienceclips/ages/7_8/plants_grow.shtml
Owls: