Things that are small
Basic/smallest unit of matter
What is an Atom?
homogeneous mixture definition and example
all pieces look the same, cannot distinguish the difference
volume formula
volume= length x width x height
What is the molecule for water
H2O
physical change definition and example
same substance, looks different
substance made of 1 time of atom, 100% pure substance
heterogeneous mixture definition and example
Can see the different piece in the mixture, sometimes layered
density formula
Density = mass/volume
Is a chemical or physical change usually permanent?
What is chemical?
chemical change definition and example
new substance created, usually not able to reverse
group of two or more atoms with a chemical bond
What is a molecule?
A. Black Coffee
B. Water
C. M&M's
D. Mustard
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YOU GET 300 POINTS!!
Would you weigh more on Pluto or Jupiter? Why?
Jupiter, because it is bigger which equals more gravity.
Is starting a campfire a chemical or physical change?
What is Chemical?
How many atoms, molecules and compounds are in H2O?
3 atoms
2 elements
1 molecule
1 compound
a group of two or more elements chemically bonded
What is a compound?
What is the difference between mass and weight?
Mass is the amount of matter an object has which never changes. Weight changes depending on gravity.
Why is weight not a good indicator of how heavy something is?
Weight is not a good indicator of how heavy something is because depending on the gravity of the planet the weight changes.
What is an ice cube melting an example of?
What is a physical change?
Label CO2 as atom, element, molecule and or compound
What is a molecule and a compound?
Which of the following is a homogeneous mixture?
A. Cereal in Milk
B. Sugar water
C. Cup of fruit
D. Boba Tea
What affects the density of objects?
Mass and Volume
CO2 is made of how many atoms, molecules and compounds?
3 Atoms
1 molecule
1 compund
What is the density of an object that has a mass of 30g and a volume of 15 mL?
2 g/mL