When designing an experimental investigation, why is it important to test only one variable?

What must be true about electrons sharing the same atomic orbital? A. They must have absorbed different amounts of energy. B. They must have opposite charges. C. One is negatively charged, the other is neutral. D. They must have opposite spins.

What is an example of reactivity? O A. Sugar dissolving O B. Brass tarnishing O c. Rain falling O D. Water freezing

If you forget your units, is disaster guaranteed

Is 70 degree hot or cold

Critical Thinking Questions 8. What relationship exists between an atom's valence electrons and the number of dots in the Lewis structure of the atom?

When you kick a soccer ball across a field it will eventually come to a stop. Does this prove or disprove Newton's first law of motion? It disproves Newton's first law of motion because gravity is stronger than friction.

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

If a new substance is formed in a chemical reaction, what atoms do they consist of?

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.