Atoms and Elements
Give an example of an element
oxygen, gold, hydrogen, etc
How can we increase the motion of particles in a material?
add thermal energy
what is the formula for water
H2O
Element with 1 proton
hydrogen
What are the three types of chemical bonds?
covalent, ionic, metallic
Positively charged particle in the nucleus
What is a proton
In which state of matter are the particles vibrating but not moving?
solid
How do the atoms that make up molecules stick together?
chemical bonds
6 protons and 6 electrons
Carbon
covalent
Which element has the symbol N?
nitrogen
Adding heat to a liquid turns it into a __________
gas
What type of bond holds Sodium (Na) and Chlorine (Cl) together to form table salt??
ionic
Fe
chemical symbol for iron
Formed between a metal and a non-metal
ionic bond
Smallest atom
Hydrogen
condensation turns ____________ into ___________
gas, liquid
How many Hydrogens in C14H26O14?
26
Elements that are neither metals nor non-metals
metalloids
What type of bond holds the two oxygen atoms in O2 together?
covalent
Which elements have such a strong pull on electrons that they "steal" them from other atoms
Group 7: Cl, F, I, etc
Ice cubes shrinking in the freezer, without melting, is caused by ___________
sublimation
What type of bond holds Iron (Fe) and Chromium (Cr) together in stainless steel?
Metallic
Elements with a single valence electron, which makes them very reactive, especially when they are mixed with water
alkali metals (Li, Na, K, Rb, etc)
Element that does not form chemical bonds
Noble gases (He,Ne, Ar, Kr, Xe)