Element vs Compound

Today Hannah in lab came across a piece of chalk. The chemical formula is CaCO3. Lets help Hannah out! Is chalk an element or compound?

Tags

NGSS.MS-PS1-1

Hannah has a few more questions to answer about chalk and needs your help! Hannah has to break down what chalk is made of. How many elements are present?

Tags

NGSS.MS-PS1-1

Now that Hannah knows how many elements are present, she needs to figure out how many atoms of each element are present! How many Calciums are there?

Tags

NGSS.MS-PS1-1

Hannah now knows haw many calciums are there. But there are two more elements she needs help with! How many carbons are present in chalk?

Tags

NGSS.MS-PS1-1

Hannah is almost done with breaking down the chemical formula of chalk! She needs help with the last element! How many oxygens are present?

Tags

NGSS.MS-PS1-1

Hannah finished with breaking down the chemical formula of chalk. However this led her to look at Oxygen that we breath because oxygen was also found in chalk! The chemical formal for oxygen is O2, is the molecule an element or compound?

Tags

NGSS.MS-PS1-1

Help Hannah figure out how many elements are present in the oxygen that we breathe! How many elements do you see present in the formula O2?

Tags

NGSS.MS-PS1-1

Hannah has one more question about oxygen she needs answered. How many oxygens atoms are present?

Tags

NGSS.MS-PS1-1

Hannah finished her research on chalk and oxygen. Hannah needs help putting everything she learned together. Lets help her identify the difference between chalk and oxygen! What is a difference between Chalk CaCO3 and Oxygen O2? Explain.

Tags

NGSS.MS-PS1-1