EMC

This is difficult

100

A mixture in which one substance is evenly distributed uniformly throughout another substance is a?

solution

200

Mixtures can be easily

a. melted

b. separated

c. destroyed

Seperated

300

Which of the following is an example of the formation of a mixture?

Rust forming on Koy's lawnmower

Salt dissolving in water

Sodium and chlorine forming salt

Salt dissolving in water

400

Which of the following is an example of a container filled with a pure substance rather than with a mixture?

Balloon filled with air

Balloon filled with helium

Glass filled with water

Glass filled with tea

Balloon filled with helium

500

Students make create sand, gravel, and a coffee filter to separate the water from the particles within.  What type of system are they using to seperate the water?

Filtration

This might be more difficult

100

Chromatography  is a process for separating components of a mixture.  True or False?

True

200

What is a process of purifying a liquid compound by heating it into a vapor that is then condensed back into a liquid?

Distillation

300

What type of mixture do you need to shake well and why would you need to shake it?

Suspensions.  

To ensure it is evenly dosed. 

400

When Chemical X is added to a liquid, the chemical breaks into Substances Y and Z. It is not possible to break Substances Y and Z into simpler particles. 

What substances are Y an Z?

Element, compound, mixture?

Element. 

500

What is the best method for separating a metallic silvery white substance from the liquid in the beaker?

Filtration

Holly Smokes

100

What is silver nitrate (AgNO₃)  classified as?

Element

Compound

Mixture

Compound

200

Coach Fawcett is making a kilt.  It is made from lambs wool and has many different dyes to make it bright and colorful like his personality. What is the best way to separate the dyes?

Filtration, boiling, chromatography, distillation.

chromatography

300

Students are investigating the physical properties of three solid mixtures by placing each solid mixture in liquid water. What physical property are the students testing?

Boiling point, solvent strength, solubility. 

solubility

400

if you are making kool aid, what is the water?

Solution, solvent, solute. 

solvent

500

if you are making kool aid, what is the kool aid sugar?

Solution, solvent, solute.

solute

Wait, what?

100

A container is filled with a mixture. What should a student do to determine whether copper particles are in the mixture?

Magnet, boil, filter. 

use a magnet

200

What pure substance is composed of more than one element?

Hydrogen, oxygen, air, water

water

300

Gwen get some captain crunch cereal and pours a cup of milk onto the cereal.  she decides it isnt sweet enough and adds some honey.  Yum, delicious! Is it a element, compound, or mixture?

Mixture, it has kept its original properties and is heterogenous. 

400

Apple juice is what type of mixture? 

Heterogenous

500

Milk is a homogenous mixture with large particles of one substance. What is this a example of?

Suspension, colloid, solvent

Colloid

HELP

100

What is an example of a mixture?

Iron, copper, steel, sodium. 

Steel is not a element, It is mainly iron and carbon. 

200

What is the odd one out?

Copper, aluminum, bronze, magnesium. 

Bronze, it is a mixture of copper and tin. 

300

Which substance is most likely classified as a colloid?

Soda, water, oxygen, fog. 

Fog is a colloidal solution in which water (liquid, dispersed phase) is dispersed in the air (gas, dispersion medium)

400

What makes a mixture heterogenous vs homogenous? 

Non uniform particles, that are distinct from one another. 

500

Compounds are the basic building blocks necessary to form all matter.

True or false. 

False, atoms (protons, neutrons, and electrons) in different combinations create all the diverity in the universe.