Science Midterm UMS review

Front

What is the trend of elements in Period 3 of the periodic table from left to right?

Back

Elements go from metals to metalloids to non-metals.

Front

Where would an element with a metallic-gray appearance and properties of both a metal and a nonmetal be found on the periodic table?

Back

In section 3.

Front

What describes the motion of a child running from point B to point C at a constant speed?

Back

A child runs at a constant speed.

Front

How is velocity defined?

Back

Velocity is defined as speed in a given direction, e.g., 55 m/s east.

Front

What is NOT a physical change when making s'mores?

Back

Digesting a graham cracker.

Front

What are metals typically characterized by?

Back

Metals are typically shiny, malleable, ductile, and good conductors of heat and electricity.

Front

What is a non-metal?

Back

Non-metals are elements that are usually dull, brittle, and poor conductors of heat and electricity.

Front

What are metalloids?

Back

Metalloids have properties of both metals and non-metals and are semiconductors.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition.