physical science 1114 checkup 2
by a hydrate heated to a temperature just above 100 c.
How is an anhydrous compound formed?
molecular
Hydrogen bonds are the strongest type of ___________________________________ bonds.
hydrate
In a ____________________, molecules of water surround and unite with a crystal.
Hindenburg and Challenger
The airship __________________ and the space shuttle _____________________ exploded because hydrogen is highly flammable.
for them to produce fire
Think! Based on the properties of hydrogen and oxygen, what would you expect to happen in a chemical reaction between these two elements?
water
Think! When an explosive chemical reaction occurs between hydrogen and oxygen , ___________________________, which is nonflammable and nonexplosive, is formed.
hydroxide
Water reacts with an active metal to produce a/an ___________________ and hydrogen gas.
hydration
Water that chemically unites with a crystal is called water of ____________________.
Because of its hydrogen bonds and the arrangement of its atoms
Why is ice less dense than liquid water?
Helium
______________________, which is also lighter than air, is not flammable like hydrogen.
oxygen
necessary for combustion
oxygen
reacts with metals to form metal oxides
oxygen
reacts with nonmetals at high temperatures to form nonmetal oxides
oxygen
remains a liquid for a temperature range of 31 c
hydrogen
remains a liquid for a temperature range of only 6 c
hydrogen and oxygen
tasteless, odorless, colorless
hydrogen and oxygen
very reactive element
anhydrous
A hydrate from which the water has been removed is called a/an ___________________ compound.
hydride
A metal ________________________________ is a compound formed of hydrogen and a metal .
anhydride
A metal oxide that reacts with water is an a basic ___________________________.
anhydride
A nonmetal oxide that reacts with water is a acid ___________________________.
acid
A reaction of a nonmetal oxide and water produces a/an __________________________.
base
A reaction of water and a metal oxide produces a/an _______________________.
polar
A water molecule is formed by a ________________________ covalent bond.
hydrate
Any compound containing water of hydration is called a/an _________________________.
binary
Any compound which contains only two elements is called a _________________________ compound.
stronger
Covalent and ionic bonds are much ________________ than hydrogen bonds.
nonmetal and metal
A ____________________ is an electron receiver; a _________________________ is an electron donor.
hydrocarbon
A compound formed of hydrogen and carbon is called a ______________________________.
hydrogen
atomic number 1
oxygen
atomic number 8
hydrogen and oxygen
component of water
hydrogen
discovered by Henry Cavendish
oxygen
discovered by Karl Scheele and Joseph Priestley
hydrogen and oxygen
exists naturally as gas molecules made of two atoms
hydrogen
flammable
oxygen
found as a solid in Earth's crust
oxygen
heavier than air
hydrogen and oxygen
in liquid form, used as a components in rocket fuel
hydrogen
lighter than air
hydrogen
lightest gas
oxygen
liquid form is magnetic
hydrogen
located in Group IA on periodic table
oxygen
located in Group VIA on periodic table
hydrogen
major component of stars
hydrogen
may have formed canopy around Earth before the Flood
hydrogen
most abundant element element in the universe
oxygen
most abundant element on Earth