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Multiple Choice

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

Multiple Choice

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

• an element

• mixture

• compound

• solution

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NaHCO₃ is an example of —

• an abbreviation
• a compound
• a mixture
• an element

Multiple Choice

A substance made of only one type of atom is called —

• an element
• a mixture
• a compound
• a salt

Multiple Choice

Table salt, or sodium chloride has the chemical formula NaCl. How is sodium chloride classified?

• as an element

• . as a compound

• as a mixture

• as a liquid

Multiple Choice

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

• an element

• compound

• mixture

• suspension

Multiple Choice

Classify the picture with the correct label.

• Element
• Compound
• Mixture of Elements
• Mixture of Compounds

Multiple Choice

This picture represents which of the following?

• A single element

• Mixture of molecules

• mixture of atoms

• mixture of compounds

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What does this illustrate

• Elements

• Compunds

• Mixture of Elements and Compunds

• Mixture of Compounds

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This diagram represents a _____.

• pure substance that is a compound
• mixture of elements
• pure substance that is an element
• mixture of compounds

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Which of the following is an element?

• Sugar
• Salt
• Water
• Oxygen

Multiple Choice

This diagram represents a _____.

• Element

• Compound

• Mixture of compound and element

• Mixture of two elements

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Zinc

• Z

• Zi

• ZN

• Zn

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Hydrogen

• Hy

• H

• Hr

• Hn

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Iron

• Ir

• In

• Fe

• FE

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Potassium

• P

• K

• Pt

• k

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Which compound is best represented by this particle diagram?

• NH₃

• H₂O

• CH₄

• HCl

Multiple Choice

Which compound is best represented by this particle diagram?

• C₂H₆

• C₆H₁₂O₆

• CO₂

• NaCl

Multiple Choice

True or False: All molecules are compounds.

• true

• false

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True or false: Air is a mixture.

• true

• false

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Which of the following is a mixture?

• oxygen

• gold

• sand

• water

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Matter is anything that has mass and takes up space.

• true

• false

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What is the definition of a compound?

• The smallest part of any substance which can exist on its own

• Two or more atoms chemically joined together (can be the same or can be different)

• A simple substance in which all the atoms are identical

• Two or more different elements chemically joined together

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All matter is made of .....

• energy 
• atoms 
• air
• chemistry

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

• a molecule.

• a mixture.

• an element.

• a compound.

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Two or more physically combined substances form

• a compound.

• an acid.

• an element.

• a mixture.

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A substance that contains only one type of atom is a(n)

• compound

• element

• heterogeneous mixture

• homogeneous mixture

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A compound is made of ________ atoms.

• big

• similar

• different

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Carbon Dioxide is a ______ 

• compound 
• element 
• mixtures 
• Battle of Bunker Hill 

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This picture represents which of the following?

• element
• compound
• mixture

Multiple Choice

This picture represents which of the following?

• element
• compound
• mixture

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The smallest unit of an element is

• a compound.

• a molecule.

• an atom.

• a mixture.

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• Element
• Compound
• Mixture

Multiple Select

• Element
• Mixture

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• Element
• Compound
• Mixture

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• Element
• Compound
• Mixture

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Which of the following are elements?

• He 

• O₂ 

• S₈

• Fe₂O₃

• O₃

A Compound

A substance composed of 2 or more elements chemically bonded.

Component elements have a definite ratio (E.g. 2:1 for H:O in water)

Compounds can be separated by chemical means into their component elements.

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The center of the atom.

Has protons + neutrons.

• neutron

• nucleus

• electron

• atom

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Has a positive charge.

Found in the nucleus.

• neutron

• electron

• nucleus

• proton

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Has no charge ( neutral ).

Found in the nucleus.

• proton

• neutron

• electron

• nucleus

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Has a negative charge.

Found OUTSIDE of the nucleus.

• proton

• neutron

• electron

• nucleus

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A pure substance that is made from a single type of atom. The building blocks for all the rest of the matter in the world.

Examples include iron, oxygen, hydrogen, gold, and helium.

• matter

• atom

• particle

• element

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This tells you the size of an atom. Add together protons and neutrons.

Protons + Neutrons

• element

• atom

• proton

• atomic mass

Multiple Select

These are the 3 states of matter.

• True

• False

Multiple Choice

True or False: elements AND compounds are pure substances.

• True

• False

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______ Have high melting and boiling points

• Metals

• Non - Metals

• Mettaloids

• All of the above

Multiple Choice

(NaCl) Sodium Chloride also known as table salt or salt

• element

• compound

• mixture

Multiple Choice

Water - H₂O

• element

• compound

• mixture

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Peroxide - H₂O₂

• mixture

• element

• compound

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Glucose (Sugar) - C₆H₁₂O₆

• mixture

• element

• compound

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Ammonia - NH₃

• mixture

• element

• compound

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Hydrochloric Acid - HCl

• mixture

• element

• compound

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Carbon Monoxide - CO

• mixture

• element

• compound

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Carbon Dioxide - CO₂

• compound

• mixture

• element

Multiple Choice

Potassium Chloride - KCl

• mixture

• element

• compound

Multiple Choice

O (oxygen)

• element

• compound

• mixture

Multiple Choice

C (carbon)

• mixture

• element

• compound

Multiple Choice

N (nitrogen)

• element

• compound

• mixture

Multiple Choice

F (fluorine)

• element

• compound

• mixture

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H (hydrogen)

• element

• compound

• mixture

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Na (sodium)

• element

• compound

• mixture

Multiple Choice

pizza

• compound

• element

• mixture

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tea

• mixture

• element

• compound

Multiple Choice

How many hydrogen and oxygen atoms in H₂O?

• 2 Hydrogens and 1 oxygen

• 3 hydrogens and 2 oxygens

• 1 hydrogen and 1 oxygen

Multiple Choice

which is an Element?

• H₂0 (water)

• O₂(Oxygen)

• CO₂

• FeS

Multiple Select

Which Is an Compound?

• H20

• Sugar

• Soda

• NaCl