Show:
Atoms
Counting Atoms
Physical Property
Mixture
Chemical Property
100
What is the smallest unit of an element?
What is Atom?
100
How many total atoms? H2O
3
100
What describes matter?
Physical Properties
100
What is a combination of two or more substances?
Mixture
100
What describes how a substances reacts?
Chemical Properties
200
What is a substance that cannot be broken down into simpler substances?
Element
200
How many atoms? CH4
5
200
What is the temperature at which a liquid becomes a gas?
boiling point
200
Yes or No? Can a pure substance be both a compound and an element?
yes
200
Is burning a physical or chemical property?
Chemical
300
What is a substance made of two or more atoms?
compound
300
How many atoms? 2H2O?
6
300
What two measurements do you need to record to calculate the physical property of density?
Mass and Volume Density = Mass/Volume
300
Is sugar and water mixed fast together Heterogeneous or or Homogeneous?
Homogeneous
300
Is baking bread a chemical or physical change?
Chemical change
400
Elements must combine how to be a compound?
Chemically
400
How many total atoms? C16H10N2O2
30
400
What is the metric units used for density?
Grams and Centimeters Squared
400
Can gases mix with liquids? yes or no
Yes
400
What is a substance called when iron reacts with oxygen and moisture?
rust
500
What is the smallest unit of a substance that keeps all of the physical and chemical properties of that substance?
Molecule
500
How many atoms? 3H2SO4
21
500
What determines what we use everyday? What determines why we select certain substances to use each day?
Physical Properties?
500
Gasoline is an example of what classification of a mixture?
Miscible
500
What is the ability of a substance to combine chemically with another substance called?
reactivity