Classification of Matter 🧠✔️

The Law of Conservation of Matter states:

• Matter can be created from nothing

• Matter is destroyed during chemical reactions

• Matter is neither created nor destroyed, only changed in form

• Mass after a reaction is less than before

Tags

NGSS.MS-PS1-5

Which is an example of a pure substance?

• Air

• Salt (NaCl)

• Lemonade

• Salad

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NGSS.MS-PS1-4

Which best describes an element?

• A substance made of two or more different types of atoms

• A substance that cannot be broken down by physical or chemical means

• A homogeneous mixture which can be separated physically

• A substance that can be broken down chemically but not physically

Which is an example of a molecule of an element?

• H₂O

• NaCl

• O₂

• CO₂

Tags

NGSS.MS-PS1-1

The smallest particle of a compound that still has the compound’s properties is:

• Atom

• Molecule

• Mixture

Tags

NGSS.MS-PS1-1

A mixture in which substances are evenly mixed and cannot be distinguished is:

• Heterogeneous mixture

• Homogeneous mixture

• Suspension

• Colloid

A mixture in which substances are unevenly mixed and easily identified is:

• Homogeneous mixture

• Heterogeneous mixture

• Solution

• Compound

Fog is an example of a:

• Solution

• Colloid

• Suspension

• Compound

Which of the following can be separated by physical means?

• Compound

• Mixture

• Element

• Atom

Which of the following can be separated only by chemical means?

• Compound

• Mixture

• Element

• Suspension