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Flashcards in Atoms Deck (17):
1

What are atoms and what do they contain?

Atoms are the basic building blocks of matter that make up everyday objects. They contain subatomic particles. These are protons, neutrons and electrons. The atoms in an element all contain the same number of protons. All atoms are neutral.

2

What is an atomic number?

An atomic number is the number of protons in every atom of an element. Elements in the periodic table are arranged in order of their atomic number.
Atomic number = p

3

What is the symbol, charge, mass, and result of a proton?

Symbol = p
Charge = 1+
Mass = 1
Result = in nucleus

4

What is the symbol, charge, mass, and result of a neutron?

Symbol = n
Charge = 0
Mass = 1
Result = in nucleus

5

What is the symbol, charge, mass, and result of a electron?

Symbol = e (eāˆ’)
Charge = 1-
Mass = 1/1820 (negligible))
Result = orbits nucleus

6

What are some notes about atoms?

-Most of the atom is empty space.
-All atoms are neutral.

7

What are the similarities and differences between Neutrons and Protons?

Both found in the nucleus and mass of 1.
Different charge.

8

What are the similarities and differences between Protons and Electrons?

Both neutral.
Mass is different.

9

What are the similarities and differences between Electrons and Neutrons?

Both neutral.
Position different.

10

What are the subatomic particles?

Protons, Neutrons, Electrons.

11

What is a compound and what is the formula for it.

A compound is a pure substance composed of two or more different atoms chemically bonded to one another. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two. e.g water (H2O) because its made up of 2 hydrogen's and an oxygen.

12

What is an ionic compound and what is the formula for it?

Ionic bonds form when a metal reacts with a non-metal. Metals form positive ions; non-metals form negative ions. Ionic bonds are the electrostatic forces of attraction between oppositely charged ions.
The oppositely charged ions are arranged in a regular way to form giant ionic lattices. Ionic compounds often form crystals as a result.

13

What is a covalent compound and what is the formula for it?

Only non-metal atoms join together by covalent bonds. A covalent bond exits when a pair of electrons are shared by 2 non-metallic atoms. The positive nucleus of each atom both attract this sharing pair of electrons forming.
covalent - not covalent
CH4 - NaI
CO2 - MgO

14

What is valency?

It is the number of bonds an element needs to form.

15

What is the valency of silver (Ag)?

1 even though its not in a group.

16

What are the valencies for the transition metals?

All of them are 2 apart from silver.

17

What is an isotope?

Isotopes are atoms of an element with the normal number of protons and electrons, but different numbers of neutrons. Isotopes have the same atomic number, but different mass numbers.