Elements Compounds Mixtures Solutions Colloids and suspensions

100

A pure substance that cannot be separated into simpler substances by physical or chemical means
What is an element?

100

A pure substance composed of 2 or more elements that are chemically combined
What is a compound?

100

Combination of 2 or more substances that are not chemically combined
What is a mixture?

100

A mixture that appears to be a single substance
What is a solution?

100

a mixture that has properties of both solutions and suspensions. the particles are dispersed throughout but are not heavy enough to settle out.
What is a colloid?

200

physical-boiling point, melting point, density, color, hardness chemical- reactivity with acid or oxygen, flammability
List two unique set of properties elements can be identified by

200

True
Compounds have properties that differ from those of the elements that form it. True or False

200

True
Solutions, suspensions and colloids are all types of mixtures. True or False

200

salt, sugar, kool-aid
Give three examples of things that are soluble in water

200

A mixture in which particles of a material are more or less evenly dispersed throughout a liquid or gas. The particles are heavy so eventually they settle down.
What is a suspension?

300

the periodic table
What is the name of the table that lists all of the elements?

300

through chemical changes. sometimes, energy is needed for a chemical change to happen
How can compounds be broken down? example- if you have NaCl, how can we separate the sodium from the chlorine?

300

distillation, centrifuge, evaporation, filtration
Describe three ways in which we can separate mixtures

300

solute- substance that is being dissolved solvent- substance in which the solute is dissolved
What is a solute? What is a solvent?

300

snow globe
give an example of a suspension

400

- O - H - C - Cl - Al
What is the symbol of the following elements: -Oxygen -Hydrogen - Carbon -Chlorine - Aluminum

400

- Calcium - Carbon - Oxygen 5 atoms
Name the elements in the following compound and state how many atoms the compound has: CaCO3

400

pizza, salt and water, mayonnaise, snow globe
Give an example of a mixture, a solution, a colloid and a suspension

400

- solvent - solute - solute
Name the solute and the solvent in lemonade: water: lemon juice: sugar:

400

mayonnaise, shaving cream, jello, whip cream
give three examples of a colloid

500

- Magnesium - Lithium - Nitrogen - Helium - Nickel
Name the names of the following symbols: - Mg - Li - N - He - Ni

500

MgSO4
Write the chemical formula for magnesium sulfate that is made up of one atom of magnesium, one atom of sulphur and four atoms of oxygen

500

1- use a strainer to get the pebbles 2- add water to the resulting salt and pepper 3- pass the solution through a filter and get the pepper 4- evaporate the water and get the salt
How can you separate a mixture of salt, pepper and pebbles?

500

b
Which one has a higher concentration: a) 100 mL of water + 100 g of sugar b) 50 mL of water + 100 g of sugar

500

The particles in a colloid are dispersed throughout but are not heavy enough to settle out. The particles in a suspension, however, are more or less evenly dispersed throughout the liquid or gas but eventually settle down
What is the difference between a colloid and a suspension?

Elements, Compounds, Mixtures, Solutions, Colloids, Suspensions

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