States of Matter
What are the three states of matter?
Solid liquid gas
Sugar tastes ______________ and lemons taste ________?
sweet, sour
What is a chemical property?
How a substance reacts and changes its chemical identity
Should you ever taste anything in a chemistry lab?
no
Why is aluminum used to make foil?
Because it is malleable
Water in a lake is found in which state?
Liquid
What property describes how something smells?
odor
Is glass combustible?
No
If you smell a substance, what method must you use?
Wafting (hand waving)
Why is copper used in wiring?
It is a good conductor of electricity
Water in an ice cube tray is found in what state?
Solid
What property describes how shiny something is?
Luster
Name a fossil fuel that is combustible?
coal, natural gas, gasoline
Why should nothing be tasted in a lab, even common food items?
They may be contaminated and unsafe
Why does ice float on water?
Solid water is less dense than liquid water
Steam is what state?
Gas
What property describes how much light passes through a substance?
Clarity
What element reacts strongly with water?
sodium
Why is gold used in jewelry?
It is dense, doesn't rust, and is easily shaped.
What property of a substance determines whether it is a solid liquid or gas?
State of matter
On Mohs hardness scale, what is the hardest substance and what is its value?
Diamond, 10
How must sodim be stored to avoid reacting with water vapor in air?
under mineral oil
What property describes that ketchup pours slowly?
Viscosity