Final exam review physical science

Front

Why do scientists most want to learn more about fusion?

Back

To make energy for people to use.

Front

What group are the Alkali Metals in?

Back

1

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.

Front

What is the correct formula for Sodium Oxide?

Back

Na2O

Front

Balance this equation: H2 + Cl2 ---> ?

Back

H2 + Cl2 ---> 2HCl.

Front

What is fusion in the context of physical science?

Back

Fusion is the process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What are the main characteristics of Alkali Metals?

Back

They are highly reactive, have one electron in their outer shell, and are found in group 1 of the periodic table.

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 together.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number, showing periodic trends.