Pure Substances
Mixtures
Water as the Universal Solvent
Facts you should know about particle theory
Periodic Table
100

What are the 2 types of pure substances?

Elements and Compounds

100

How many types of mixtures are there?

2

100

What is a solvent?

A liquid that can dissolve other substances

100

What is a homogenous mixture?

A mixture that is uniform throughout

100

What is the periodic table?

A list of all the elements (NOT Water, Earth, Fire And Air)

200

What is an Element?

It’s a pure substance made up of only one type of atom

200

Name at least 3 ways to physically separate a mixture

Separating Funnel, Filtration, Sedimentation, Distillation, Evaporation, Sieving, Magnetic Separation, Crystallization, Chromatography, Centrifuge

200

What is the solvent that can dissolve the most things?

Water. It is capable of dissolving more substances than any other liquid.

200

What is the name for the transition from solid to liquid?

Melting

200

What are the 3 broad categories on the periodic table?

metals, nonmetals and metalloids

300

What is a Compound?

A mixture of 2 or more Elements

300

What are the 3 sizes of particles in mixtures?

Solution, Colloid and Suspension

300

Can water dissolve cotton?

No




lol sorry I ran out of ideas

300

What is a heterogeneous mixture?

A mixture that is non-uniform

300

 what are the columns called on the periodic table

groups and/or chemical families

400

What is the difference between Elements and Compounds?

Elements cannot be separated by any means, chemical or physical, whereas compounds can be separated chemically

400

What are the 2 types of mixtures?

Homogeneous and Heterogeneous

400

How many positively charged atoms and how many negatively charged atoms does water have

there is a positive charge on each of the 2 hydrogen atoms and a negative charge on the oxygen atom.

400

How many states of matter are there?

There are 4, Solid, Liquid, Gas and Plasma

(There are actually way more than this, but I couldn't be bothered to list/find them all)

400

How many elements are on the periodic table?

118

500

How does one separate Compounds into the elements they are made up of?

Compounds can be separated by undergoing chemical changes/reactions

500

Name all 10 ways to separate a mixture physically

Separating Funnel, Filtration, Sedimentation, Distillation, Evaporation, Sieving, Magnetic Separation, Crystallization, Chromatography, Centrifuge

500

How does water dissolve things?

one atom in the water molecule (hydrogen) has a positive electrical charge and the other atom (oxygen) has a negative charge. This allows the water molecule to become attracted to, and therefore pull apart, many other different types of molecules.

500

At what temperature do the molecules start to bond for longer when forming ice?

4oC

500
Who created the Periodic Table?

Russian scientist Dimitri Mendeleev.