Matter+Classification, Measurements

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What are the two classifications of matter?

Pure substances and Mixtures

What are the two classifications of a pure substance?

Element and Compound

What is an element vs a compound?

Element cannot be broken down; Fe or Ag. A compound is composed of two or more elements; NaCl

What are the two classifications of a mixture?

Homogeneous and Heterogeneous

What is a homogeneous mixture vs a heterogeneous mixture?

Homogeneous mixture is uniform and has the same layer throughout like coffee. Heterogeneous mixture is not uniform and has separate layers like wet sand

Is air homogeneous or heterogeneous?

Homogeneous

Is tea with sugar homogeneous or heterogeneous?

Homogeneous

What is the rule for sig figs when adding/subtracting?

Use the number with the least amount of DECIMAL PLACES

What is the rule for sig figs with multiplying/dividing?

Use the number with the least amount of SIG FIGS

What are significant figures?

The digits within a number that help determine accuracy

What are our three base units?

Grams, Meters, Liters