How are elements group into families

Arrange these elements in order of decreasing atomic size : Sulfur, chlorine, aluminum, and sodium.

Which two notations represent atoms that are isotopes of the same element? a. 12150sn and 11950sn b. 12150sn and 12150sn c. 198o and 199f d. 3917cl and 3919k?

Which of the answer choices lists a true statement about ionic compounds? 1. They are formed by atoms that have the same number of valence electrons. 2. They are formed by ions that have the same charge. 3.

The data in the graphs show the progress of a chemical reaction with time by expressing the volume of gas produced in milliliters (ml) over time in minutes. Which graph shows that the chemical reaction eventually stopped? W. X. Y. Z. A. Z B. X C.

If the length width and height of a sphere is 3.7 what is the diameter

Which characteristic best identifies an Arrhenius base

Which statement correctly describes why a compound is a pure substance? O A compound is not a pure substance because each of its molecules is m elements A compound is a pure substance because its molecule cannot be broken O A compound is not a pure

What negative impact did chemistry have on society through the production and use of chlorofluorocarbons?

A food web shows the easiest way to get the most energy out of a producer the path a producer has to take to reach the top of the web how all organisms are connected through energy all of the possible energy pathways through an ecosystem

What phase change is endothermic