Level 1 Mastery Check - Unit 1 🧪🧬

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What is matter?

Anything that has mass and takes up space

How do we describe matter?

With physical and chemical properties

A _ _ _ _ _ _ _ _ property can be observed without altering the identity of the substance.

Physical

Give some examples of physical properties

Color, Density, Texture, Temp, Length, Weight, Mass, Volume, etc.

An _ _ _ _ _ _ _ _ _ property is a property that changes when the size of the sample changes. Examples are mass, volume, and length

extensive

A _ _ _ _ _ _ _ _ _ property is a property that doesn’t change when you take away some of the sample. Ex: Temp, color, and hardness

intensive

Is color a intensive or extensive property?

Intensive

Is density a intensive or extensive property?

Intensive

Is texture a intensive or extensive property?

Intensive

Is temp a intensive or extensive property?

Intensive

Is length a intensive or extensive property?

Extensive

Is volume a intensive or extensive property?

Extensive

Is weight a intensive or extensive property?

Extensive

A chemical change can’t be observed without _______ the identity of the substance

altering

Give an example of some physical changes

Tearing, Crushing, Cutting, Dissolving, Phase Changing (Melting, Freezing, etc.)

Give an example of some chemical changes

Rusting, Burning, Fermenting, Metabolism

There are FIVE signs of chemical changes. Name them.

1 Odor being given off. 2 Color Change. 3 Temperature Change. 4 Formation of gas. 5 Formation of a precipitation.

Paper Burning is a _________ change

chemical

A lake freezing is a _________ change

physical

A glass breaking is a _________ change

physical

A cake baking is a _________ change

chemical

Boiling water is a _________ change

physical

A newspaper yellowing is a _________ change

chemical

What is a quantitative observation?

Something with a quantity (number)

What is a qualitative observation

A quality of something

Matter can be classified as _______ geneous or _______ geneous

Heterogeneous or Homogeneous

Homogeneous means that all parts of the substance are _________. This includes elements, compounds, and solutions.

Identical

______________ means that all parts of the substance are not identical. This includes mixtures

Heterogeneous

Look at this visual chart above. How does it work???

You start at matter, then see if it is homogeneous or heterogeneous and so on.

An element is the ________ pure substance

simplest

A element can’t ne changed into anything simpler through _ _ _ t or a chemical reaction

heat

An element consits of all the same _ _ _ _ s ( the building blocks of matter)

atoms

Give some examples of elements.

hydrogen, helium, carbon, nitrogen, oxygen, fluorine, neon, sodium, aluminum, silicon, chlorine, potassium, calcium, iron, nickel, copper, zinc, silver, gold, mercury (NOTE: DO NOT MEMORIZE ALL OF THESE JUST RECONIZE THEM)

_ _ _ _ _ _ _ _ s are made of more than one element; any combination of two or more different kinds of elements

compounds

Compounds are elements ___________ly combined

chemicaly

Compounds can be broken down by heating or a _ _ _ _ _ _ _ _ reaction

chemical

Compounds have a f _ _ _ _ number of components in themselves.

fixed

Give some examples of compounds.

water, carbon dioxide, carbon monoxide, sugar, hydrogen peroxide, gasoline, baking powder, vinegar, chalk, bleach, caffeine, propane, table salt, honey, aspirin (DO NO MEMORIZE; ONLY RECONIZE ALL OF THESE COMPOUNDS)

What is filtration?

Using a porous barrier to seperate a solid from a liquid in a heterogeneous mixture (a mixture)

A _ _ _ _ _ _ _ _ has two or more substances mixed together.

solution

A solution is p _ _ _ _ _ _ _ ly combined

Physically

All parts of a solution are _ _ _ _ _ _ _ throughout

uniform

Give an example of some solutions.

Coffee, Sea Water, Milk, (basically anything that is homogeneous no matter where you look at it)

A mixture is similar to a solution, except all parts are ____ __________

not identical

A mixture can be seperated by f _ _ _ _ _ _ _ _ n

filtration

Give an example of a mixture.

Soil, Pizza, Sand + Water, Cereal, etc.