3A) Elements & 3B) Compounds and Formulae Flashcards
What is the basic unit of all matter?
The Molecule
Molecules are the smallest unit of a substance that is _____ and _____.
Stable and Complete
What are molecules made of?
Atoms
True or False: Elemental Molecules are so named because they are made of many elements.
False. Elemental Molecules and made of atoms of the same type.
True or False: An element cannot be broken down into simpler substances by a chemical reaction.
True
What properties do all metals have in common (except Hg)?
Shiny, malleable and Conductive
True or False: All non-metals are nonconductive.
False, this is true for most non-metal elements, but not all.
What is a Mixture?
Different molecules in the same space, but not bound together.
What Group of Elements are stable alone?
Group 8 Atoms
Organic Compounds always contain _____ and are _____ and _____.
Carbon, Large and Complex
What does a chemical formula tell you?
How many atoms, how many elements, which elements
True of False: Compound Elements behave the same as the elements they are made of.
False, Compounds have different chemical properties than their elements.
C6H12O6 is glucose. What information can you gather from this formula?
It has 6 Carbons atoms, 12 Hydrogen atoms, and 6 Oxygen atoms. It is made of 24 total atoms, and three total elements.
If comparing atoms, molecules and elements to bricks, what would each be?
Atoms = Bricks Elements= What kind of Bricks we Have Molecules = What we build with our Bricks
True or False: Mixtures are easily separated into their parts.
True
What differs inorganic compounds from organic compounds?
Inorganic Compounds Lack carbon, are small, and can be represented by chemical formula.
True or False: Organic molecules can be represented by a simple chemical formula.
False, they are simply too large.
True or False: Compounds cannot be decomposed into simpler elements by chemical reactions.
False
Elements in a compound are always in definite proportions by _____.
Weight
Compounds contain ____ or more elements _____ (2 words)
2, Chemically Combined
