Elements
True or False:
Water is an Element
Define a Compound
Substances made of at least two kinds of atoms chemically bonded together
What is an atom?
The building block of matter
What element on the periodic table is the least dense?
Hydrogen
Define an element
A substance that cannot be broken down into simpler matter
True of False:
Methane (CH4) is a compound
True
Molecule
What are elements on the periodic table arranged in columns based on?
Similar chemical properties
Which of the following is NOT an element?
>Gold
>Iron
>Steel
>Nickel
>Silver
Steel
Is Hydrogen gas (H2) a compound or just a molecule?
Molecule
(It is made of two of the SAME kind of atoms)
What smaller particles make up an atom?
Protons, Neutrons and Electrons
Who is credited as the creator of the Periodic Table?
Dmitri Mendeleev
What is Element number 9?
Fluorine
A substance is composed of 4 atoms, all of which are the same element. Is this a compound?
No!
What is a lattice?
a regular, repeated three-dimensional arrangement of atoms in a solid
As of 2024, how many elements are on the periodic table?
118
Which of the following is not a real element:
>Lanthanum
>Iridium
>Roentgenium
>Palpanium
Palpanium
Bronze is a metal that is a combination of Tin and Copper in a certain ratio (88% Copper, 12% Tin). Is copper a compound?
No, it is a mixture. The atoms do not chemically bond together.
Do gases tend to exist as single atoms or a pair of bonded atoms?
Bonded atoms (eg H2, O2)
Which group on the periodic table are inert?
Hint: Inert means non-reactive
The noble gases (group 18)