2024 Final Science Exam

All matter is made of extremely small particles called ___________.

• elements

• atoms

• molecules

• particles

Tags

NGSS.MS-PS1-1

Pure substances that cannot be broken down into simpler substances are called __________.

• atoms

• particles

• elements

• molecules

Which of the following is a compound?

• oxygen

• carbon dioxide

• nitrogen

• iron

Tags

NGSS.MS-PS1-1

The _________ are found along a zig zag line on the right side of the table that separates the two main sections of elements.

• non-metals

• metals

• metalloids

• plastics

What are the horizontal rows in the periodic table called?

• siblings

• groups

• families

• periods

On the periodic table, each element is displayed. The information in the top left is known as the ______________. This is also known as the number of ________.

• valence electrons, electrons

• atomic number, electrons

• atomic number, protons

• valence electrons, protons

A mixture, such as milk, that is uniform throughout is called a _________________.

• homogeneous mixture

• heterogeneous mixture

• mixture

• compound

A combination of more than one substance that keeps its own properties and is physically combined.

• atom

• element

• compound

• mixture

Water is made up of 2 hydrogen atoms and 1 oxygen atom. Which of the following would water be classified?

• mixture

• atom

• compound

Tags

NGSS.MS-PS1-1

In order to determine the number of neutrons an element contains, you must find the element on the periodic table and _______________.

• the number of protons is always the same as the number of neutrons

• subtract the atomic mass from the number of protons

• add the number of protons to the atomic mass

• subtract the number of protons from the atomic mass