Elements, compounds and mixtures

An element can be broken down into simpler substances by...

• physical means
• chemical means
• Both chemical and physical means
• elements can't be broken down

Which type of element is shiny, ductile and malleable?

• metal
• nonmetal
• metalloid
• play dough

Which of these is a mixture?

• Carbon Dioxide
• Air
• Ammonia
• Table Salt

Which of these is NOT a part of an atom?

• proton
• neutron
• gelectron
• electron

Which two particles are found at the center of an atom, also called the nucleus?

• protons and electrons
• neutrons and electrons
• protons and neutrons 

Which is NOT an example of a compound?

• H₂O
• NaCl
• CO₂
• H

What is different about Hydrogen and Helium atoms?

• The have different numbers of electrons and protons.
• They have different numbers of atoms.
• They are different.

True or False: A compound often has different properties from the individual elements that compose it.

• True
• False

Tags

NGSS.MS-PS1-1

What is a mixture?

• Where two materials combine with a chemical reaction
• where two chemicals react with each other
• Combining two or more materials where no chemical reaction occurs
• where nothing happens

A milk shake is a(n)

• mixture
• compound
• element