Lab: Biscuits

The mixture in step 2 (flour, sugar, baking powder, and salt) is a ____ mixture.

• Homogeneous
• Heterogeneous

The mixture in step 3 (flour, baking powder, salt, and butter) is a ____ mixture.

• Homogeneous
• Heterogeneous

The mixture in step 4 (flour, baking powder, salt, butter, and milk) is a ____ mixture. (you should have still been able to see the butter)

• Homogeneous
• Heterogeneous

After you add the milk, is this a physical or chemical change?

• Physical
• Chemical

Tags

NGSS.MS-PS1-2

Two or more elements chemically combined, whose properties are completely different from those of the individual elements, are known as ____.

• Compound
• Heterogeneous
• Homogeneous
• Solution

Tags

NGSS.MS-PS1-5

Pure substances ____.

• Are made of up of only one material
• Have definite and constant properties under certain conditions
• Are elements or compounds
• All of these are correct
• None of the above

An example of heterogeneous mixture is ____.

• Cola
• Iced Tea
• Sodium Chloride
• Tossed Salad

Which of the following involves a chemical change?

• Combining baking soda and vinegar
• Combining salt and water
• Sweetening iced tea
• Tossing salad

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is an example of a reversible physical change?

• Change in color
• Chopping
• State change
• Rusting

Tags

NGSS.MS-PS1-4

An example of an element in modern chemistry is___.

• Air
• Iron
• Water
• Fire