Guess the word #1
Guess the word #2
Short Answer
100


A combination of two or more pure substances where each keeps its own properties—a new substance is not formed.


Mixture

100


A mixture where the substances are thoroughly mixed up.


homogenous 

100

What instrument is used to separate blood cells from plasma?


Centrifuge

200

A liquid with air bubbles trapped in it.


foam 

200


A mixture where the substances are not evenly mixed up.


heterogeneous 

200

Name three groups of minerals


Silicates, carbonates, halides, sulfides, phosphates, oxides

300


A substance made when two or more elements combine chemically.


Compound

300


A nearly universal solvent.


Water 

300

What is a native mineral?


Mineral containing only one element 

400


The process of heating a mixture to kill the bacteria in it.


Pasteurization 

400


The process of breaking up fat into tiny pieces that can remain suspended.


Homogenization

400

List three ways to separate substances in a mixture.


Filtering, decantation, distillation, evaporation, chromatography, centrifuge. 

500


A substance that cannot be broken down chemically.


Element

500


The ability of fat molecules to keep air molecules suspended.


Structural integrity 

500

Briefly explain how milk is turned into cheese.


Acid is added to coagulate the milk, curds are separated from the whey, an enzyme is added to harden the curds, curds can be pressed and aged.