Practice Quiz for Unit 1 and Unit 2

what is the definition of chemical change?

• any change that results in the formation of new chemical substances. 
• changing clothes
• matter cannot be created or destroyed, only change form
• changes affecting the form of a chemical substance, but not its chemical composition.

Tags

NGSS.MS-PS1-1

Is burning wood a chemical or physical change?

• chemical
• physical

Which of the following is NOT an example of chemical change?

• sour milk
• burning wood
• breaking a pencil
• rust

Tags

NGSS.MS-PS1-2

____________ is the branch of chemistry that would identify enzymes and determine reaction mechanisms for biochemical reactions.

• Organic Chemistry

• Biochemistry

• Physical Chemistry

• Analytical Chemistry

____________ is the branch of chemistry that would measure the amount of energy released or absorbed in chemical processes.

• Inorganic Chemistry

• Organic Chemistry

• Biochemistry

• Physical Chemistry

Tags

NGSS.HS-PS1-4

____________ is the branch of chemistry that would study and develop new materials to improve existing products or make new ones that in general do no contain carbon.

• Organic Chemistry

• Inorganic Chemistry

• Biochemistry

• Physical Chemistry

The study of chemicals that, in general, do not contain carbon. 

• applied chemistry
• inorganic chemistry
• organic chemistry
• biochemistry

Convert into kilometers.
452.159 meters.
Round to the nearest thousandth.

• 0.452159
• 4.52159
• 45.2159
• 452159

Tags

CCSS.6.RP.A.3D

Convert into grams.
763.1247 milligrams.

• 7631.247
• 76312.47
• 0.7631247
• 7631247

Tags

CCSS.4.MD.A.1

You know 1000 mg = 1 g.  Convert 2.5 grams into milligrams.

• 25 mg
• 25,000 mg
• 250 mg
• 2,500 mg