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Atomic Theory & Periodic Table Flashcards | StudBud
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Atomic Theory & Periodic Table
Neutrons have no charge
What does the atomic number represent?
Atomic Theory & Periodic Table
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1
What does the atomic number represent?
Number of protons in the nucleus
The position in the periodic table
Number of electrons in the shells
The weight of the atom
2
Neutrons have no charge
False
True
3
At a fundamental level what is everything made up of?
Compounds
Chemicals
Air
Atoms
4
What is the process of water going from a liquid to a gas
Melting
Gas formation
Evaporation
Boiling
5
In the Periodic Table what are the vertical columns called?
Lines
Groups
Columns
Periods
6
An element is a substance that contains one type of atom
True
False
7
In the Periodic Table what are the horizontal rows called?
Atomic Number
Periodic Table
Group
Period
8
What are metalloids?
Elements that show properties of metals and non-metals
Metals that are soft, shiny and reactive
Elements that are Noble Gases
None of the above
9
Some chemical symbols do NOT represent the actual name of the element
False
True
10
Isotopes are the same element they just have a different amount of ________
Neutrons
Electrons
Protons
Atoms
11
What are characteristics of a chemical change
Temperature change
Gas is produced
Colour change
Odor change
12
Molecules are made up of non-metal atoms bonded together, what is an example of a molecule
Gold (Au)
None of the above
Water (H20)
Sodium
13
How do we calculate the atomic mass?
Protons + Neutrons + Electrons
Number of protons + number of neutrons
Mass of all the electrons shells
Mass of the whole atom
14
What colour subatomic particle is the electron
Grey
Yellow
Green
Blue
15
What is in the nucleus of an atom
Neutrons and protons
Cell membrane
Only neutrons
Only electrons
16
How many atoms of oxygen are in carbon dioxide CO
2
2
3
O
0
17
What are the vertical columns in the Periodic Table called
Atomic number
Period
Column
Group
18
Which example is a physical change?
Slicing bread
Fruit rotting
Baking a cake
Mixing baking soda and vinegar
19
Elements can be categorised depending on their different properties, what are the categories?
Metals and Non metals
Solid metal, Soft metal, Gases
Metal, Non metal, Compounds
Metal, Non metal, Metalloid
20
A mixture is two or more chemical substances that are
NOT
chemically bonded together
True
False
