Question

1 multiple choice 5 points
in a lab where students measure the mass of slime before and after it forms, which step helps ensure accurate results
measuring reactants separately and carefully before mixing
stirring the slime with your hands quickly
using a container with holes
guessing the mass of the slime

Explanation:

Measuring reactants separately and carefully before mixing helps in accurately determining the mass - changes during slime formation. Stirring quickly with hands can introduce errors, a container with holes may cause loss of substances, and guessing is not accurate.

Answer:

Measuring reactants separately and carefully before mixing