Chemistry- Elements (7th Grade Science)

Front

What can you predict from an element's location in the periodic table?

Back

Its properties.

Front

What is a characteristic of most metals?

Back

Most metals are not liquid at room temperature.

Front

What powerful machines do scientists use to make most synthetic elements?

Back

Particle accelerators.

Front

What does the half-life of a radioactive isotope represent?

Back

The length of time needed for half the atoms of a sample to decay.

Front

What natural event provides enough energy for nuclear fusion reactions that create the heaviest elements?

Back

A supernova.

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What are the three main categories of elements in the periodic table?

Back

Metals, nonmetals, and metalloids.

Front

What property do metals typically have that allows them to be drawn into wires?

Back

Ductility.

Front

What is the term for the ability of a material to conduct heat and electricity?

Back

Conductivity.

Front

What is a synthetic element?

Back

An element that is not naturally occurring and is created artificially in a laboratory.