Physical Science Chapter 5 Study Guide

What is one of the most useful tools in chemistry for organizing elements?

• A molecular structure diagram

• A laboratory equipment list

• A chemical reaction chart

• A periodic table

How many elements had scientists identified by 1750?

• 17

• 30

• 10

• 25

Who grouped the known elements into categories in 1789?

• Antoine Lavoisier

• Dmitri Mendeleev

• Isaac Newton

• John Dalton

Which of the following was NOT one of the categories used by Lavoisier?

• Liquids

• Nonmetals

• Gases

• Metals

What was the main reason for organizing elements into groups?

• To organize them based on their properties

• To make them more expensive

• To improve their color

• To increase their weight

How did Mendeleev organize the elements in his periodic table?

• By color

• By alphabetical order

• By atomic number

• By atomic mass

In the 1860s, who developed an approach for organizing the elements while playing the card game solitaire?

• Dmitri Mendeleev

• Marie Curie

• Isaac Newton

• Albert Einstein

What did Mendeleev use to organize the elements in his periodic table?

• Alphabetical order

• Decreasing density

• Increasing atomic number

• Increasing mass

In Mendeleev's periodic table, how did the masses change within a column?

• Stayed the same.

• Increased from top to bottom.

• Varied randomly.

• Decreased from top to bottom.

What is a periodic table?

• An arrangement of elements in columns, based on a set of properties that repeat from row to row.

• A list of chemical reactions.

• A chart of random numbers.

• A diagram of atomic structures.