Metals, Non-Metals And Precipitates

Question 1

What Is The Difference Between Metals, Non-Metals And Metalloids Using Their Physical Properties?

Answer 1

Metals are shiny, solid at room temperature, malleable and ductile. Non-metals are dull, brittle and bad conductors. Metalloids share these properties.

Question 2

What Is Monatomic?

Answer 2

When an element exists as a single atom. All noble gases are monatomic.

Question 3

What Is Diatomic?

Answer 3

When an element exists as two of the same atom, chemically bonded together. For example, O2, N2, Cl2.

Question 4

What Is An Atomic Number?

Answer 4

The atomic number of an element is the number of protons in its nucleus.

Question 5

What Is A Mass Number?

Answer 5

The mass number is the amount of protons and neutrons in the nucleus of an atom.

Question 6

What Is An Ion?

Answer 6

An ion is an atom or a group of atoms with a positive or negative charge, resulting from an imbalance in the number of protons or electrons.

Question 7

What Is Ionic Bonding?

Answer 7

The attraction of positive and negative ions for each other in an ionic lattice.

Question 8

What Is The Electron Configurations For The First 20 Elements Given Their Atomic Number?

Question 9

What Are The Positions Of The First 20 Elements On The Periodic Table Given Their Electron Configuration?

Question 10

Why Are Noble Gases Unreactive In Terms Of Electron Configuration?

Answer 10

Noble gases already have an extremely stable outer shell, and don’t react with other elements as a result of this.

Question 11

Do Noble Gases Exist As Uncombined Single Atoms?

Answer 11

Yes, they do.

Question 12

For Simple Ions, What Electron Arrangement Do They Need In Their Outer Shell To Be Stable?

Answer 12

Simple ions have a stable electron arrangement of 8 in their outer shell (or 2 for the first shell).

Question 13

What Charge Will Simple Ions Have Given Their Electron Configuration Or Position On The Periodic Table?

Question 14

What Happens When A Metal Combines With A Non-Metal To Form An Ionic Compound?

Answer 14

When a metal reacts with a non-metal, electrons are transferred from the metal to the non-metal. This forms positive metal ions and negative non-metal ions. These recently formed ions have opposite charges and therefore attract to each other to form an ordered 3D ionic lattice.

Question 15

What Are The 5 Ions That Need To Be Remembered?

Answer 15

NH 4 +
CO 3 2-
OH -
NO 3 -
SO 4 2-

Question 16

What Are The Names Of Ionic Compounds Given Their Formulas?

Question 17

How Is A Stable Arrangement Of Electrons Achieved When Non-Metal Atoms Combine By Sharing Electrons To Form A Covalent Bond?

Answer 17

When 2 or more non-metals react, they can’t both gain electrons, so they share them. This means they’ll both have 8 electrons in their outer shell, and create a covalent bond.

Question 18

What Does A Chemical Reaction Produce?

Answer 18

a chemical reaction produces a new substance that is usually hard to reverse.

Question 19

What Is One Of The Many Classifications Of A Chemical Reaction?

Answer 19

There are many classifications of chemical reactions, but one is called a Precipitate.

Question 20

What Is A Solution?

Answer 20

A solution is a homogeneous mixture of 2 or more substances.

Question 21

What Precipitate Will Form When Mixing Two Salt Solutions?