Joe asked all of the students in his class if they liked pizza or not, and wrote down their answers. Was this a scientific experiment? 1. No, because he did not create a graph using the numbers. 2. No, because he did not test anything, he asked people’s opinions. 3. Yes, because he collected information. 4. Yes, because he had a hypothesis.

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the relation between concentration of reactants and the rate of chemical reaction?

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.