science

 

For science we had a red and a blue litmus and a universal Indicator which was yellow. The red was an acid so if the substance was an acid it would change to red. The blue was a base so if the substance was a base it would change to blue.

substance:
                           red (litmus)          blue (litmus)        yellow(universal indicator) 
lemon juice:       dark red                      red                  orange
baking soda:     dark purple                  same                same
soapy water:     a bit purple                  same                same
spay n wipe:     purple\blue                  same                navy blue                  
vinegar:            same                            pink                orange
soda water:     same                             red                  same
water:             same                             same               same
gavescon:        purple                           same               green