Physical Science Midterm Review

Front

Convert 45,000 centigrams (cg) to hectograms (hg)

Back

4.5 hg

Front

Which of the following is an example of a compound? (Options: Carbon Dioxide (CO2), Oxygen, Salt & Water, Sand & Water)

Back

Carbon Dioxide (CO2)

Tags

NGSS.MS-PS1-1

Front

What are the products of a combustion reaction? (Options: Fuel and oxygen, Carbon (C) and Oxygen (O2), Carbon dioxide (CO2) and water (H2O), Everything is burned, nothing is produced)

Back

Carbon dioxide (CO2) and water (H2O)

Front

In a lab, what unit would you use to measure the volume of water in a graduated cylinder? (Options: grams (g), meters (m), seconds (s), milliliters (mL))

Back

milliliters (mL)

Front

How many total electrons would be shared in a triple bond between two nitrogen atoms? (Options: 3, 6, 8, 12)

Back

6

Front

What is the definition of a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed.

Tags

NGSS.MS-PS1-5

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.

Front

What is a chemical reaction?

Back

A process that involves the rearrangement of the molecular or ionic structure of a substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5