Atoms and the Periodic Table — Test Answers

Which of these is a molecular ingredient that could be used in a wall-filling material?

The Venn diagram compares protons with electrons. Which shared property belongs in the region marked "B”?

The arrow is pointing to sodium’s

In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one?

Which properties make a metal a good material to use for electrical wires?

What was Antoine Henri Becquerel studying when he discovered radioactivity?

Atom A and Atom B have the same number of protons and neutrons, but they do not have the same number of electrons. Which statement describes the atoms?

An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have?

Which element is most likely to be shiny?

Which best describes a radioactive isotope?

The elements least likely to form bonds are found in which group?

Who described atoms as small spheres that could not be divided into anything smaller?

Who is known as the "father of modern chemistry” because he first organized all known elements into four different groups?

Which element has the largest atomic radius?

The first model of the atom was developed through

Which properties are characteristic of metalloids?

Which best explains why ionization energy tends to decrease from the top to the bottom of a group?

Cecil is working with samples of chlorine Cl , oxygen cap o , bromine Br , and silver Ag The samples are all at room temperature. Which substance is most likely the most dense?

What are the two parts of an atom?

The elements in group 17 of the periodic table are all called halogens. All halogens have the same