All matter is made of 

• energy 
• atoms 
• air
• chemistry

Tags

NGSS.MS-PS1-1

What is the atomic number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

What is the mass number?

• the number of protons
• the number of protons and neutrons
• the number of neutrons
• the number of protons and electrons

In the modern periodic table, elements are arranged by:

• atomic mass

• atomic number

• valence electrons

• number of isotopes

Anything that has mass and takes up space is called

• heterogeneous

• homogeneous

• matter

• density

The number of protons in the nucleus of an atom

• atomic mass

• atomic number

• isotope

• nucleus

equal to the number of protons plus neutrons in the nucleus of an atom

• atomic mass

• atomic number

• isotope

• valence electrons

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Elements in a ..................have similar chemical properties.  

• period
• group
• row

What group is this element located in?

• 5

• 6

• 7

• 8