Elements, Compounds, & Mixtures

Elements, Compounds, & Mixtures

Multiple Select

What are the 2 major categories of matter? Check all that apply:

• elements

• mixtures

• pure substances

• compounds

Multiple Select

What are the 2 types of pure substances? Check all that apply:

• elements

• homogeneous mixtures

• heterogeneous mixtures

• compounds

Multiple Select

What are the 2 types of mixtures? Check all that apply:

• elements

• homogeneous mixtures

• heterogeneous mixtures

• compounds

Elements

• can be found on the Periodic Table

• examples: oxygen (O₂); Carbon (C); Sodium (Na)

Open Ended

Where can you look to find out if something is an element?

Multiple Select

Check all the examples of elements:

• hydrogen (H₂)

• sulfur (S)

• water (H₂O)

• carbon monoxide (CO)

• nitrogen (N₂)

Compounds

• combinations of 2 or more elements

• examples: H₂O; CO; N₂O; CH₃COOH; HCl

Multiple Select

Check all the examples of compounds:

• O₂

• NaCl

• KBr

• H₂

• CaCl₂

Homogeneous Mixtures

• blended evenly throughout

• you CANNOT tell the different substances apart

• more examples: creamy peanut butter, Gatorade, hand sanitizer

there is a typo on this slide!!! vinegar is NOT a homogenous mixture, it is a compound!!

Multiple Choice

Solutions are what type of mixture?

• homogeneous

• heterogeneous

Heterogeneous Mixtures

• you can look at the different substances and tell them apart

• more examples: trail mix, crunchy peanut butter

Colloids

• can be determined using the Tyndall effect

• particles are large enough to scatter light differently, but do not settle

• are considered heterogeneous because of particle size

• examples: milk, paper

Multiple Choice

Colloids and suspensions are which type of mixture?

• heterogeneous

• homogeneous

Multiple Select

Check all the HOMOGENEOUS mixtures:

• trail mix

• creamy peanut butter

• Gatorade

• sweet tea

• pizza

Multiple Select

Check all the HETEROGENEOUS mixtures:

• soft drinks (unopened)

• snow globes

• paint

• salad

• hand sanitizer