Pre AP ICP - Classification of Matter

Classification of Matter

two or more substances physically combined (variable composition)

Mixture

all particles in matter are identical (fixed composition)

Pure Substance

What is Matter?

​anything that takes up space and has mass

• Matter is either a pre substance or a mixture

• Basic units of matter

• Have mass and volume

• Contain subatomic particles:

  • Protons

  • Neutrons

  • Electrons

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​Atoms

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Two or more elements chemically combined in a fixed proportion
- can be broken down by a chemical reaction
has different properties than the elements it makes up

Compound

Simplest form of matter
Can be found on the periodic table

Element

Two Types of Pure Substances

Two or more substances chemically combined

Compound

Just one substance; the simplest form

Element

Two Types of Substances
Molecular Look

Fill in the Blank

____ are made from only one type of atom.

Fill in the Blank

Compounds are created when 2 or more ____ chemically combine.

• Physical combinations of two or more substances that keep their own chemical properties

• Are only physically combined (mixed)

• Can be separated by physical means

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Mixtures

substances in the mixture are not evenly spread out

• Different components are easy to see, or separate out over time

• Ex. Salad dressing, paint, cereal

Heterogeneous

components are evenly distributed out on a microscopic level

• Solutions (when one substance is dissolved into another) are homogeneous mixtures

• Usually appears “blended”

• Ex. Bleach, lemonade, coffee

Homogeneous

Two types of mixtures

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​

uneven distribution; "different"

Heterogeneous

even distribution; "same"

Homogeneous

Two types of mixtures
Molecular Look

Fill in the Blank

Mixtures can be separated by ____ means.

Multiple Choice

What type of matter can ONLY be separated by chemical means?

• Element

• Mixture

• Compound

• Atom

• Heterogeneous

  • The parts can easily be seen and separated

• Homo​geneous

  • The parts are evenly mixed

  • Harder to separate​

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Types of Mixtures

Multiple Choice

What type of matter cannot be separated by any means?

• Element

• Mixture

• Compound

Multiple Select

Check all examples that are heterogeneous mixtures.

• Saltwater

• Pepperoni pizza

• Chopped salad

• Air

Multiple Select

Check all examples that are homogeneous mixtures.

• Milk

• Tea

• Chicken noodle soup

• Air

Multiple Select

Which of these are compounds?

• Water (H₂O)

• Table salt (NaCl)

• Oxygen (O₂)

• Glucose (C₆H₁₂O₆)

Multiple Choice

Which of these is not an element?

• Water (H₂O)

• Copper (Cu)

• Carbon (C)

• Iron (Fe)

Multiple Choice

What is the smallest unit of an element that retains the chemical properties of that element?

• Electron

• Neutron

• Molecule

• Atom

Multiple Choice

Which substance is composed of only one type of atom?

• Water (H₂O)

• Table salt (NaCl)

• Gold (Au)

• Glucose (C₆H₁₂O₆)

Multiple Choice

Which of these samples shown best represents an mixture?

• A

• B

• C

• D

Multiple Choice

Which of these samples shown best represents an element?

• A

• B

• C

• D

Multiple Choice

Which of these samples shown best represents a compound?

• A

• B

• C

• D