Weegy: If element X has 72 protons, then it has 72 electrons. The number of protons and electrons in an atom is always the same.
User: Solutions that have more H+ than OH- ions are
A. reactants.
B. acids.
C. bases.
D. enzymes.
Weegy: Solutions that have more H than OH- ions are acids.
User: A well-tested explanation that explains a lot of observations is
A. a controlled experiment.
B. an inference.
C. a theory.
D. a hypothesis.
Weegy: A well-tested explanation that explains a lot of observations is a Theory.
User: What does a reviewer do during peer-review?
A. Change data to support results.
B. Focus only on mistakes in spelling.
C. Repeat the experiments in the article.
D. Check for mistakes and bias.
Weegy: A reviewer check for mistakes and bias during peer-review.
User: The work of scientists usually begins with
A. creating experiments.
B. testing a hypothesis.
C. careful observations.
D. drawing conclusions
User: Which of the following is a substance formed by the chemical joining of two or more elements in definite amounts?
A. nucleus
B. enzyme
C. compound
D. isotope
Weegy: COMPOUND is a substance formed by the chemical joining of two or more elements in definite amounts, letter A.
User: Which property of water causes the curved surface shown in the figure below?
A. cohesion
B. pH
C. adhesion
D. heat capacity
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