7.7.1-Substances & Mixtures

What is Matter?

Key Concept: Matter is anything that has mass and takes up space. Matter can be described in terms of its volume, mass, and weight.

​

​Understanding what matter is and how units are used to describe matter can help you understand the structure of the physical world.

Multiple Choice

 Matter can be described in terms of.....

• mass

• volume

• weight

• all answers are correct

Multiple Choice

______________ is anything that has mass and takes up space.

• volume

• matter

• atoms

• cells

Multiple Choice

What are the building blocks of matter?

• Mass

• Volume

• Atoms

• Legos

Multiple Choice

What is at the center of the atom?

• Protons

• Neutrons

• Electrons

• Nucleus

Multiple Choice

The two main classifications of matter are what?

• solids and liquids

• atoms and particles

• substances and masses

• substances and mixtures

Multiple Choice

Matter with a composition that is always the same?

• Mixture

• Substance

• Compound

• Element

Elements

• Pure substance

• Made up of identical atoms

• Cannot be separated into a simpler substance by physical or chemical means

Periodic Table

• Developed by Dmitri Mendeleev.

• A way of organizing all of the known elements.

• Elements are organized by the number of protons.

Multiple Choice

Elements can be broken down into simpler substances.

• false

• true

• sometimes

Multiple Choice

A molecule can be made of the same kind of atoms.

• true

• false

• Say What??!!!

• Dude!! Sweet!!

Multiple Choice

Substances can be elements or _____________.

• mixtures

• compounds

• solutuions

• matter

Compounds

• Pure substance.

• Made up of two or more different elements joined by chemical bonds.

• Made of elements in a specific ratio that is always the same

• Has a chemical formula

Chemical Formula

• Specific ratio of elements in a compound

• Makes it easier to describe elements and molecules

• C + O₂ = CO₂ = Carbon Dioxide

• N + H₃ = NH₃ = Nitrogen Trihydride (Ammonia)

Chemical Reactions

• Process where different compounds react to form new compounds

• Happens when Individual atoms from both compounds break their chemical bonds,Separate from their compounds, and

• Form new chemical bonds with other recently-separated atoms.

Multiple Choice

NaHCO₃ is an example of —

• an abbreviation

• a compound

• a mixture

• an element

Multiple Choice

Contains only one kind of atom.

• Element

• Compund

• Mixture

Multiple Choice

Which of the following is a way in which elements and compounds are similar?

• Elements and compounds are pure substances.
• Elements and compounds are both made up of different kinds of atoms.
• Elements and compounds can both be broken down by physical means.
• Elements and compounds are listed on the periodic table.

Multiple Choice

A substance that cannot be broken down into any other substance by ordinary chemical means is called —

• molecule

• mixture

• element

• compound

Multiple Choice

1 A substance made up of two or more chemically combined elements is —

• an element

• mixture

• compound

• solution

Multiple Choice

What is the combination of symbols and numbers that represent a compound?

• chemical formula

• chemical equation

• atomic number

• atomic mass

Mixtures

• A combination of two or more pure substances that are not chemically bonded.

• Substances held together by physical forces, not chemical.

• No chemical change takes place.

• Each item retains its properties in the mixture.

• Can be separated physically. 

Types of Mixtures

• There are two types of mixtures: homogeneous and heterogeneous.

Homogeneous

• The components of a homogeneous mixture are uniformly distributed so the composition is the same throughout the mixture. (ex: steel, milk, kool-aid, blood).

Heterogeneous

• The components of a heterogeneous mixture are not uniformly distributed and are separated into their own regions in the mixture (ex: pizza, cereal in milk, Oil & Vinegar, mixed nuts, bowl of different candies).

Multiple Choice

A mixture that appears to be evenly mixed throughout:

• a homogeneous mixture

• a heterogeneous mixture

Multiple Choice

This is made up of one or more of the SAME kind of atom

• Element

• Mixture

• Compound

• Matter

Multiple Select

How many of the following are elements?

• Oxygen

• H₂O

• Salt

• Air

• Carbon

Multiple Choice

gold, Au, is an example of a(n)

• element

• compound

• mixture

Multiple Choice

What is H₂SO₄ 
 made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen
• 1 hydrogen, 2 sulfur, 4 oxygen
• 2 hydrogen & 4 sodium
• 1 hydrogen & 6 sodium

Multiple Choice

What is H₂SO₄ 
 made up of?

• 2 hydrogen, 1 sulfur, 4 oxygen
• 1 hydrogen, 2 sulfur, 4 oxygen
• 2 hydrogen & 4 sodium
• 1 hydrogen & 6 sodium

Multiple Choice

______________ are combinations of two or more substances that are physically blended together.

• substances

• compounds

• atoms

• mixtures

Multiple Choice

A ______________ mixture is a type of mixture in which the individual substances are not evenly mixed.

• Heterogeneous

• Homogeneous

Multiple Choice

A _____________ mixture is a type of mixture in which the individual substances are evenly mixed. 

• Homogeneous

• Heterogeneous

Multiple Choice

Water and sand is a ___________ mixture.

• homogeneous

• heterogeneous

Multiple Choice

Which is an example of a homogeneous mixture

• oil and water

• apple juice

• salt and pepper

Multiple Choice

A homogeneous mixture also is called a ____________.

• solvent

• solution

• solute

Multiple Choice

True or False: Salt water is a homogeneous mixture, or solution.

• True

• False

Multiple Choice

substance that cannot be broken down into a simpler substance

• chemical

• element

• compound

• mixture

Multiple Choice

basic particle from which all elements are made

• atom

• molecule

• element

• compound

Multiple Choice

force of attraction between atoms

• atom bond

• compound

• chemical bond

• molecule

Multiple Choice

group of two or more atoms held together by chemical bonds

• atom

• molecule

• chemical bond

• compound

Multiple Choice

substance made of two or more elements that are chemically combined is a set ratio

• compound

• chemical formula

• molecule

• atom

Multiple Choice

What shows the elements in the compound and the ratio of atoms

• chemical formula

• chemical bond

• molecule

• mixture

Multiple Choice

What holds the hydrogen and oxygen atoms together in a water molecule?

• formulas

• compounds

• mixtures

• chemical bonds

Multiple Choice

A type of mixture where you can see the different parts and they can easily be separated into their different parts.

• atomic mixture

• Compound mixture

• Heterogeneous mixture

• Homogeneous mixture

Multiple Choice

A type of mixture that you can't see the different parts.

• Homogeneous mixture

• Heterogeneous mixture

• Compound

• distillation

Multiple Choice

Iron objects can be separated from a mixture using a magnet.

• evaporation

• magnetic attraction

• distillation

• filtration

Element

Compound

Homogeneous
mixture

Heterogeneous
mixture

1

2

1

2

• One type of atom
• Found on the periodic table
• One capital letter

Ne

C

H2

O2

Examples:

Visual Representation

How to Distinguish

​Elemental Molecule

• Two or more types of atom chemically

combined

• Two or more capital letters
• One substance with different elements

HBr

NH3

H2O NaHCO3

Examples:

Visual Representation

How to Distinguish

Multiple Choice

Study the diagram. Which of the following is represented in the diagram?

• monoatomic element

• elemental molecules

• compound molecules

Multiple Choice

Study the diagram. Which of the following is represented in the diagram?

• monoatomic element

• elemental molecules

• compound molecules

Multiple Choice

Study the diagram. Which of the following is represented in the diagram?

• monoatomic element

• elemental molecules

• compound molecules

Multiple Choice

What is this?

• element

• compound

• mixture

Multiple Choice

What is this?

aluminum (Al)

• monoatomic element

• compound

• elemental molecule

Multiple Choice

All of the following are elemental molecules EXCEPT:

• carbon

  C₄

• nitrogen

  N₂

• oxygen

  O₃

• water

  H₂O

Multiple Choice

All of the following are compounds EXCEPT:

• hydrogen

  H

• sodium chloride

  NaCl

• water

  H₂O

• carbon dioxide

  CO₂

• Looks like one substance
• One phase
• Two or more substances
• “NaCl and H2O”

• Anything dissolved in H2O
• Salt Water
• Air (“O2 and N2 and CO2”)

Examples:

How to Distinguish

• Can see separation of

different substances

• Two or more phases

• Oil and Vinegar
• Granite
• Potting Soil

Examples:

How to Distinguish

Multiple Choice

Chicken noodle soup is

• Homogeneous mixture

• Heterogeneous mixture

Element

Compound

Homogeneous
mixture

Heterogeneous
mixture

1

2

1

2

Multiple Choice

What is gold?

• Element

• Compound

• Homogenous mixture

• Heterogenous mixture

Multiple Choice

What is hot cocoa?

• Element

• Compound

• Homogenous Mixture

• Heterogenous mixture

Multiple Choice

What is carbon dioxide (CO₂)?

• Element

• Compound

• Homogenous Mixture

• Heterogenous Mixture

Multiple Choice

What is soda?

• Homogenous Mixture

• Heterogenous Mixture

• Element

• Compound

Multiple Choice

What is neon (Ne)?

• Element

• Compound

• Homogenous Mixture

• Heterogenous Mixture

Multiple Choice

What is pizza?

• Element

• Compound

• Homogenous Mixture

• Heterogenous Mixture

Multiple Choice

What is water (H₂O)?

• Element

• Compound

• Homogenous Mixture

• Heterogenous Mixture

​Exit Slip- Match It!