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