Elements and the Periodic Table (IC Chapter 3 Test Review)

What did Rutherford’s gold foil experiment lead him to believe? That an atom’s positive charge must be clustered in a tiny region in its center

How did Mendeleev arrange the elements on the periodic table? Increasing atomic mass

The atomic number of an element is based on what? The number of protons in its nucleus

What can you predict from an element’s location in the periodic table? It’s properties

Which elements on the periodic table are malleable, ductile, and can carry an electric current? Metals

What are the two most common alkaline earth metals? Calcium and magnesium

More than half of these elements, at room temperature, are gases. nonmetals

What elements do not ordinarily form compounds? Noble gases

Beta radiation consists of particles that are identical to these? Electrons

Why do measurements of half-life make radioactive isotopes useful? For determining the ages of rocks and fossils

These are representations of an idea to help scientists understand what they cannot observe directly. models

What is each element given on the periodic table that usually consists of one or two letters? Chemical symbol

What is a column of elements in the periodic table called? Group or family

What property is displayed in elements that easily transmit electricity and heat? conductivity

The series of electron orbits in whose model resemble planets orbiting the sun or the layers of an onion? Bohr’s

According to what is the modern periodic table organized? Atomic number

The horizontal rows represent what in the periodic table? periods

Where on the periodic table are the nonmetals located? Right side

What are atoms with the same number of protons and different numbers of neutrons called? isotopes

GOOD LUCK!!!! Study!