What is the periodic table really?

A chart of all the elements arranged logically by atomic number

Two (or more) elements combined

Define a pure substance.

One atom or molecule only present

Difference between compound and mixture?

Chemically vs. physically combined

Smallest particle of an element

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Elements, compounds and mixtures

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Test your knowledge on fundamental concepts in chemistry such as atoms, elements, compounds, mixtures, and properties of metals and non-metals.

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Questions 19

Answers

1
Identify the compound:
Hydrogen atom
Iron
Salt
Oxygen gas
2
Example of a non-metal?
Oxygen
Copper
Silver
Iron
3
What is the periodic table really?
Molecule list arranged logically
A chart of all the elements arranged logically by atomic number
Compound index arranged logically
Atom table arranged logically
4
Property of metals?
Dull appearance
Poor heat conductor
Brittle
Conduct electricity
5
What defines an element?
Two types of atoms
One type of atom
Only molecules
Atoms and molecules
6
Metals react with oxygen to form?
Water
Metal oxide compounds
A mixture
Hydrogen gas
7
A compound is..
One atom type
Two (or more) elements combined
Same type atoms
Elements and molecules
8
NOT a metal property?
Ductile
Conducts heat well
Malleable
Brittle when solid
9
Property of non-metals?
Malleable
Poor electricity conductor
Shiny appearance
High melting point
10
Define a pure substance.
One atom or molecule only present
Collection of metals
Impurities removed
Elements and compounds
11
Difference between compound and mixture?
Chemically vs. physically combined
Metals vs. non-metals
One atom type
Solids vs. liquids
12
Which is NOT a molecule?
Carbon dioxide
Water
Sodium atom
Oxygen gas
13
Slightly silly...Why did the atom go to school?
For the Bonding experience
To study periodic table
To join nucleus
Because it split with friends
14
What is an atom?
Smallest particle of an element
Group of atoms
Substance of elements
Mixture of particles
15
What is a molecule?
Only metals
Elements mixture
Single atom
Chemically bonded atoms
16
Atoms are indivisible.
True
False
17
Which is NOT pure?
Air
Water
Oxygen gas
Gold
18
What is a mixture?
Physically combined substances
One molecule type
Group of metals
Chemically bonded atoms
19
Which is an example of a mixture?
Sodium
Water
Carbon dioxide
Air

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