DIFFICULT ROUND GRADE 7 SCIENCE

IN A CHEMISTRY CLASS, GABBY PREPEARED A SOLUTION BY MIXING 25 G OF SUGAR IN 80 G OF WATER. WHAT IS THE PERCENTAGE OF MASS OF THE SOLUTION?

IT IS THE ONLY CARNIVOROUS ANIMALS THAT EATS PLANT

A train covered a distance of 120 km at a speed of 60km/hr. Using the time formula calculate the time taken by the train in covering the distance.

Ariel dropped a golf ball from her second story window. The ball starts from rest and hits the sidewalk 1.5 s later with a velocity of 14.7 m/s. Find the average acceleration of the golf ball.

WHO DEVELOPED THE FIRST COMPOUND MICROSCOPE?