Lab Chemical and physical changes wacky cake

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

• Homogeneous
• Heterogeneous

Mixtures can be distinguished from compounds because ____.

• they taste better
• the are always solids
• the parts that make up a mixture keep their properties
• they are chemically bound

A ________has different properties than the elements that form it.

• element
• compound
• homogeneous mixture
• heterogeneous mixture

Boiling water can separate the water from any minerals dissolved within because ___.

• metallic elements in mineral forms ionic compounds
• minerals have a greater molar mass than water
• minerals and water are different types of compounds
• dissolving in solution is a reversible physical change

Tags

NGSS.MS-PS1-4

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

• Compound
• Heterogeneous
• Homogeneous
• Solution

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

Tags

NGSS.MS-PS1-4

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

Which of the following causes chemical changes in food?

• Chopping
• Cooking
• Peeling
• Slicing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-5