A homogeneous mixture is called a ___________
solution
Crystals have a repeating _____________ pattern
atomic
NaCl is a salt made of
sodium chloride
How many sides does a snowflake have?
6
evidence of a chemical reaction ...
color change, explosion, bubbles, light
Water dissolves salt and the water is the ____
solvent
Everything is made of __________
atoms
How many atoms are in NaCl?
2
Snowflakes form when water vapor gas turns to a ____
solid
Density is
mass per volume, concentration of matter
Salt gets dissolved by water and it is called the _____
solute
The nucleus has positively charged ___________
protons
How many atoms are in Na(OH)2
5
What condition changes as the snowflakes fall to the ground?
temperature
Graduated cylinders measure ___________
volume
When salt dissolves in water there are the charged ___ in solution
ions
The __________________ fly around the nucleus
electrons
The only way to break the bonds in a compound is with a __________ _____________
chemical reaction or chemical change
The letter for a low air pressure system on a weather map is
L
Weight and mass are not the same because
mass is in grams on a balance and weight is in newtons on a scale
two way to separate salt and water
evaporation and boiling
Atoms from compounds when they _____ together
bond
What is name of the compound for CO2
carbon dioxide
Winter solstice is tomorrow, what is winter solstice?
1st day of winter , shortest day of the year
water is called a universal because it is very good at
dissolving different substances