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The periodic table of elements is a chart that lists all of the known elements in order of their atomic number. (T-F)
T
The scientist .............................. developed the Periodic Table of the Elements. (Dmitri Mendeleev - Robert Boyle)
Dmitri Mendeleev
A row on the Periodic Table of Elements is called a(n) .............................
Period
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
Aluminum
From the periodic table displayed, how many protons does an atom of Ag have?
47
Which one of these elements is NOT part of the noble gases family? ( Helium - Oxygen - Argon - Neon)
Oxygen
Copper is a chemical element with which symbol? (Cl - Cp - Co - Cu)
Cu
The horizontal rows on the periodic table are called groups and the vertical rows are called periods. (T- F)
F
Who am I? Clue 1: I am an unreactive metal and was first discovered around 5000 BC. Clue 2: I am very expensive. Clue 3: I am used to make jewelry and have the chemical symbol Au.
Gold
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?
80
Which is an element? (H2O - NaCl - KCl -Na)
Na
Elements that share properties of both metals and nonmetals are called ..................
Metalloids
The atomic number tells how many ..................... and ........................ an element has. (neutrons - protons - ions - electrons)
protons & electrons
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.
Argon
......................... is reddish brown in color and reacts with substances in the air. (Silver - Copper - Gold)
copper
Elements in the same group will share the same ........................... (Atomic number - shell number - chemical properties)
Chemical properties
