Midterm Physical Science

Front

What is Google Docs?

Back

A web-based application for creating, editing, and storing documents online.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change in a reaction, found on the left side of the equation.

Front

What are products in a chemical equation?

Back

Substances that are formed as a result of a chemical reaction, found on the right side of the equation.

Front

How do you calculate the total number of atoms in a compound?

Back

Add the subscripts of all elements in the chemical formula.

Front

Which particle of an atom has the smallest mass?

Back

Electron.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction showing reactants and products.

Front

What is the law of conservation of mass?

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

Front

What is a molecule?

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A group of two or more atoms bonded together.

Front

What is the difference between an element and a compound?

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

Front

What is a chemical formula?

Back

A way of expressing the composition of a compound using symbols and numbers.