K – Potassium
He – Helium
O3 – Ozone
NaCl – Salt
A compound that donates an electron is what?
An acid
An ion with a positive charge is known as what?
Cations
Chemical bases are also known as what?
Metallic hydroxides
Dry ice is the solid form of what compound?
Carbon dioxide
In a single molecule of water, how many hydrogen atoms are there?
2
Liquid air presents itself as what color?
Blue
The first element in the periodic table is what?
Hydrogen
The liquid and solid forms of oxygen are what color?
Blue
The most abundent element in the Earth’s atmosphere is what?
Nitrogen
The surface of Mars is red because it contains a great deal
of what?
Rust
What is the only letter which doesn’t appear on the periodic
table?
J
Which of these chemical compounds is often used as a poison?
Cyanide
Which of these elements falls into the “S Block” of the
periodic table?
Hydrogen
Which of these elements is heavier than air?
Oxygen
Which of these elements is liquid at room temperature?
Mercury
Who is considered the father of the periodic table?
Dmitri Mendeleev
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