PS Midterm Vocab Review

A substance that has a fixed and uniform composition, like gold or table salt (NaCl) are known as a(n) _______.

• Element

• Pure Substance

• Mixture

• Solution

A substance that cannot be broken down into simpler substances, where all atoms in a sample are identical, is called a(n) ________ .

• Element
• Compound

• Mixture

• Atom

Two or more different elements chemically bonded together in a fixed proportion form a(n) _____ .

• Mixture

• Compound
• Solution

• Atom

The smallest particle of an element is known as a(n) ______ .

• Element

• Compound

• Pure Substance

• Atom

A mixture where you can see the different substances mixed together, such as oil and water, is called a (a)   mixture.

• Homogeneous

• Heterogeneous
• Solution

• Emulsion

A mixture which is mixed so well that all of the ingredients are indistinguishable from each other and will not separate out over time is known as a (a)   mixture.

• Homogenous
• Heterogeneous

• Compound

• Elemental

A homogenous mixture where one of the substances dissolves in the other is called a (a)   .

• Heterogeneous

• Solution
• Compound

• Colloid

What is the term for a heterogeneous mixture that will separate or settle into layers?

• Suspension

• Solution

• Colloid

• Compound

What is the term for a mixture where the particles of the different substances remain afloat or hanging (will not settle out) and will scatter light? (Examples are milk, whipped cream, fog.)

• Colloid

• Solution

• Suspension

• Emulsion

What is the term for a property that can be observed or measured without changing the matter's identity?

• Physical Property

• Chemical Property

• Atomic Property

• Molecular Property