Non-metal with a mass number of 19 (8)
Metal harder than sodium and in the same group (7)
Gas used to stop Cs and Rb from oxidising in storage (5)
Process that causes reactive metals to discolour in air (9)
Negatively-charged sub-atomic particles (9)
Part of the atom comprising protons and neutrons (7)
Protons have a ______________ charge (8)
Protons and neutrons have a relative ________ of 1 (4)
Na is the chemical symbol for ____________ (6)
The only non-metal Group 3 element (5)
H is the ______________ of hydrogen (8,6)
The positive particle in an atom?
What is the neutral particle of an atom?
What is the negative particle in an atom?
What is the center of an atom called?
The Electrons are in the ______.
Atomic mass unit (amu) is used to measure the ______ of particles in atoms.
Protons and neutrons have a mass of ______ amu.
If protons and electrons are not ______ in an atom it is an Ion.
More electrons than protons in an atom make it ______________.
Each element is made of _____ atoms.
Do 2 positives attract or repel each other?
The number of protons equal the _________?
The sum of protons and neutrons in an atom?
the reigon of negative charge surrounding the nucleus
an ion that has more protons then electrons
no overall charges
an atom that gained or has lost an electron
a substance made up of only one type of atom
an alloy of iron and carbon
a surface that repels water
a substance that releases hydrogen iron into an aqueous solution
a substance that releases hydroxide ions
containing more than one atom
one-billionth of a metre
the basic unit in a polymer
a molecule made of repeating units formed into long chains
carbon fibres or polymer fibres embedded in a plastic matrix
a tiny cylinder of of carbon atoms are 100 nm long
a rustless alloy of steel that includes chromium and nickels
a mixture of base metal and small amounts of other metal
the number of protons in a nucleus
a pure substance that is made up of two or more different types of atoms chemically joined
a grid like structure of atoms or ions in which each particle is bounded to all of its neighbouring atoms
shatters if hit
What the Periodic table is made of
Protons, Neutrons, & Electrons are
Protons + Neutrons
Show number of Energy Levels of an Element on the Periodic Table
Table of all known Elements
Shows how many Valence Electrons in an Atom
The number of Protons in an Atom
Where Protons & Neutrons are located
Electrons on the highest level are called
Determines Atom's identity
This plus protons determine the mass number
Determines an atom's charge
Creator of the Periodic Table
When two or more compounds are joined together.
Diagram of Elements
Rows on the Periodic Table
Number of Protons in an Element
Chemistry that relates to non carbon compounds.
A substance with just one type of atom.
The place where Protons and Neutrons are housed
Group 18. These elements do not mix well with others.
How quick it is to join up with other elements.
A type of mixture that you cannot pick apart. A solution.
A type of mixture that you can pick apart.
A negatively charged particle.
Element with 2 protons.
positively charged particle.
A type of chemistry that involves carbon based life forms.
A particle that has no charge.
When two elements bond together.
Electrons are located around the nucleus in an electron what?
The point at which a solid turns to a liquid.
Point at which a liquid is turned into a gas.
Same number of protons different number of neutrons.
Al things that have mass and volume.
The lightest element known