Atoms and Periodic Table Review

As you move across the periodic table from RIGHT to LEFT within a period, the elements

• become less stable

• become more reactive

• change from gases to solids

• change from metals to nonmetals

Which is usually true about metals?

• metals melt at lower temperatures than any other metals

• metals always have their atoms arranged in crystals

• metals do not combine easily with nonmetals

• metals conduct electricity more easily than nonmetals

Which is the correct chemical symbol for the element sodium?

• S

• NA

• So

• Na

A common characteristic property of a metal would be that

• metals are unreactive

• metals are not shiny

• metals are all liquid at room temperture

• metals are malleable

On the periodic table, nitrogen is represented by N. N is a chemical ________.

• equation

• period

• symbol

• group

Which group of elements shares characteristics with both metals and nonmetals?

• Halogens

• Metalloids

• Lanthanides

• Actinides

Which particles in atoms have a negative electric charge?

• electrons

• protons

• neutrons

• nuclei

The elements that do not ordinarily form compounds are

• elements in the carbon family

• metals

• halogens

• noble gases

Tags

NGSS.MS-PS1-5

Elements that are gases at room temperature are likely to be classified as which of the following?

• Metals

• Nonmetals

• Metalloids

• Lanthanides

Which element has an atomic number of 18?

• Hydrogen

• Oxygen

• Fluorine

• Argon