Chem for Life 1st Semester Review

Indicate the dependent variable

• reaction pathway
• time
• catalyst
• energy

Tags

NGSS.MS-PS3-4

Indicate the independent variable

• reaction pathway
• time
• catalyst
• energy

Barney measured the mass of 12.78 grams of sugar in the density lab. How would you best describe the observation in the prior statement?

• qualitative

• quantitative

• homogeneous

• heterogeneous

The Empire State Building is really tall. How would describe the observation in the prior statement?

• qualitative

• quantitative

• homogeneous

• heterogeneous

The fundamental chemical substance from which all other substances are made is known as a(n)

• mixture
• element
• compound
• solution

A substance composed of two or more elements bonded together in fixed proportions that cannot be broken down into simpler substances by physical means is known as a(n)

• mixture
• element
• compound
• ion

Sugar water is an example of

• mixture

• element

• compound

• molecule

Alka-Seltzer placed in water and bubbling is an example of a _____?

• physical property
• physical change
• chemical property
• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The flammability of a substance, is a

• physical property
• physical change
• chemical property
• chemical change

Chicken noodle soup is what type of mixture?

• heterogeneous

• homogeneous

• colloid

• physical