Common Substances
Elements that make up water
What is hydrogen and oxygen?
The group Iodine belongs to
What is Group 7?
Your ____________ will not change in outer space.
Mass
Name the chemical: Lemon Juice
What is citric acid?
Element that conducts heat?
What is metals?
The gaseous molecule formed when nitrogen reacts with oxygen
What is nitrogen monoxide/dioxide?
Three properties of non-metals?
Non-metals are generally dull, brittle solids (or gases/liquids), poor conductors of heat and electricity (insulators), lack luster, have low densities, and exhibit high electronegativity, tending to gain electrons in reactions.
Name the chemical: Vinegar
acetic acid
Element found in the atmosphere?
Earth's atmosphere is primarily composed of Nitrogen (N₂) (~78%) and Oxygen (O₂) (~21%), with smaller amounts of Argon (Ar) (~0.9%) and variable Water Vapor, plus trace gases like Carbon Dioxide (CO₂), Neon (Ne), Helium (He), Methane (CH₄), Krypton (Kr), and hydrogen
The noble gases have
a full valence shell of electrons
Freezing, cutting, bending, dissolving, and melting are all examples of ___________ changes.
physical changes
Name the chemical: Baking soda.
What is sodium bicarbonate?
Element found in cooking salt
What is sodium and chlorine
the least electronegative element in the compound MgCl2
What is magnesium?
______________ is the amount of matter in a given space.
density
When boiling an egg what type of reaction is it?
What is mercury?
An element with 4 orbitals/rings
What is Calcium (or other element from period 4)
Conductivity, state, malleability, ductility, solubility, and density are all examples of ____________________.
physical properties
What happens when sugar is heated?
What is phase change/melting?