Zone 6
The maximum number of electrons in the first energy shell
2
What is the element symbol for Potassium?
K
Protons have this charge
postive charge
The place where Protons and neutrons are located
nucleus
Elements that are the most abundant on the periodic table.
Metal
The number you use to find the number of protons in the nucleus.
atomic number
3 main states of matter
Solid, liquid, and Gas
What is the element symbol for Calcium?
Ca
The chemical formula of ammonia
NH3
How do you know from periodic table about- how many shells an atom has?
Period number
Valency of helium
zero
The maxiumum number of electrons in the 2nd energy shell
8
Water is made of these two elements.
What is hydrogen and oxygen?
Another name for a Negative Ion
Anion
The type of bond in NaCl
ionic bond
Another name of Group 18 elements
Noble Gases
What does 7 represent in the periodic table?
Nitrogen
Two different elements are combined to form a _________
compound
Alkali metals have 1 electron in their valance shell and belong to this group.
Group 1
I am colourless but turn to pink colour in the presence of a basic solution. Who am I?
Phenolphathalein
Ions are made in what way.
losing or gaining electrons
Conversion of a solid directly to gas (without converting to liquid)
Sublimation
Covalent bonding happens generally between these type of elements.
nonmetals
Group or family 17 elements are these have how many electrons in their outer shell.
What are 7?
The sum of protons and neutrons in the nucleus of an atom is known as the _________
What is the mass number?
A covalent bond is formed by
What is the sharing of electrons?
Elements represent unique forms of these tiny things. The building blocks of everything!
What are atoms?
Neutrons have this kind of charge
neutral charge
Formula of magnesium chloride
MgCl2
Helium, Neon, Argon, Krypton and Xenon belong to the family of ______________
Noble Gases
The name for an ion with a positive charge
Cation
If atoms had feelings, what would they want most?
Stability
Valence electrons are located in this shell
outermost shell of an atom
This refers to sets of eight electrons.
octet rule
A burning matchstick produces a popping sound when brought near a gas. Which gas does this indicate?
Hydrogen gas