......................... is reddish brown in color and reacts with substances in the air. (Silver - Copper - Gold)

Which is an element? (H2O - NaCl - KCl -Na)

Which one of these elements is NOT part of the noble gases family? ( Helium - Oxygen - Argon - Neon)

The atomic number of the element mercury, a liquid metal, is 80 and its atomic weight is 200.90 amu. How many protons does one atom of mercury contain?

Who am I? Clue #1 - I am a noble gas. Clue #2 - I glow blue when an electric current is applied. Clue #3 - I am the third most abundant gas that makes up air. Clue #4 - I have 18 electrons.

Elements that share properties of both metals and nonmetals are called ..................

Elements in the same group will share the same ........................... (Atomic number - shell number - chemical properties)

The horizontal rows on the periodic table are called groups and the vertical rows are called periods. (T- F)

who am I?? Clue 1: I am a gray metal that doesn't rust. Clue 2: I am strong, light and one of the most commonly found metals in Earth's crust. Clue 3: I am used to make airplanes, drink cans and cooking foil and have the symbol Al

From the periodic table displayed, how many protons does an atom of Ag have?

The periodic table of elements is a chart that lists all of the known elements in order of their atomic number. (T-F)

The atomic number tells how many ..................... and ........................ an element has. (neutrons - protons - ions - electrons)

The scientist .............................. developed the Periodic Table of the Elements. (Dmitri Mendeleev - Robert Boyle)