Elements
Elements are made up of one type of _.
atom
Compounds are formed when _ (how many) _ (same or different) elements bond.
What states of matter can mixtures include?
3 - Solid, Liquid, and Gas
Name two types of pure substances
elements and compounds
The chemical symbol for Carbon
C
Elements are made up of different atoms listed on _ _ _.
The Periodic Table
Compound is a type of _ _
Pure Substance
A mixture is ...
2 or more substances NOT chemically bonded
True or False. Our drinking water is a pure substance.
False.
Number of Oxygen atoms in SO4
four
Elements can't be broken down _ or _.
physically or chemically
Water is considered a compound because it has _ different elements.
2 - Hydrogen and Oxygen
True or False: Air is a mixture
True
True or False. Table salt is a pure substance.
True.
Number of Chlorine atoms in 2MgCl2
Four
Elements are a type of _ _.
Pure Substance
True or False. Compounds can have 2 or more of the same element.
False. They can have 2 or more different elements.
What are the three types of mixtures?
solutions, suspensions, colliods
True or False. Colloids & Suspensions are types of pure substances
False.
If a compound contains 2 carbon atoms, 6 hydrogens and 2 oxygen atoms, the chemical formula is
C2H6O2
True or False. Elements can be solids, liquids, or gases.
True.
Compounds can only be separated _.
chemically
True or False: Mixtures can have a chemical formula
False
Pure substances can not be separated _.
physically
3Ca(OH)2 contains how many hydrogens
six