elements and compounds

What is a diamond made of?

• Silicon
• Carbon
• Gold
• Iron

Tags

NGSS.MS-PS1-1

Carbon is a(n) _________

Elements are...

• the building blocks of cells
• the types of chemical reactions
• pure substances that cannot be broken down further

• the various states of matter

Compounds are...

• mixtures of different compounds
• substances formed from two or more elements chemically bonded together
• elements that are not chemically bonded
• substances that cannot be broken down further

Tags

NGSS.MS-PS1-1

A chemical formula is...

• A method for measuring chemical purity.
• A group of numbers and letters that represents more than one element

• A graphical representation of molecular structures.
• A detailed explanation of chemical reactions.

Tags

NGSS.MS-PS1-1

What is a subscript?

• the small numbers written below and to the right of the letters in a chemical formula.

• A subscript is a character set above the normal line of type.
• A subscript is a type of font style used for headings.
• A subscript is a mathematical operation performed on numbers.

Compare and contrast the elements and compounds in terms of their chemical symbols and chemical formulas. Which are elements, and which are compounds? Ar, CH4, H2SO4, Hg, KN3, SiO2