Show:
Properties of mater
Video Questions
Counting Atoms
Chemical Reactions
Miscellaneous
100
What are the properties of Mater
Physical and chemical
100
Is this a chemical or physical interaction? Density column
Physical
100
In 3H2O, what is the 3 called?
Coefficient
100
What are the elements on the left side of a chemical equation called? And the right side?
Reactants left and products on the right
100
This is a word to describe how “runny” a liquid is
What is Viscosity
200
Give three examples of physical properties
What is Could include: Color, shape, texture, size, volume, mass, density, smell etc. Anything that can be observed with the senses
200
Give one piece of evidence that shows this is a chemical reaction https://www.youtube.com/watch?v=fToOL-bzN- o
Bubbles/foaming/formed a new substance
200
In 3H2O2 what are the 2’s called
Subscripts
200
Is this a balanced equation? How do you know? H20 > H2 O2
No it’s not because the number of atoms on the right does not equal the amount on the left H= 2 O=1 ----→ H=2 O=2
200
The amount of space an object takes up is…
What is Volume
300
Is this a physical or chemical change? Breaking a glass on the floor
Physical change
300
Physical or chemical interaction? How do you know? https://www.youtube.com/watch?v=0-f_jgyzSWU
Chemical because there is a colored smoke that comes out of the reaction
300
How many elements are in the formula CaCO3?
Three, Ca, C and O
300
This law states that all chemical equations must be balanced because matter cannot be created or destroyed
Law of Conservation of Mass
300
Explain how a density column happens
Liquids of different densities will layer with the densest liquids sinking to the bottom and the least dense floating on the top
400
Physical or chemical change? Rust forming on an iron fence
Chemical
400
Is A Giant Boulder crushing a car a physical or chemical change? Why?
Physical because the car was crushed but it’s still a car
400
How many atoms of each element in the following formula: Na(NO3)3
Na= 1 N= 3 O=9
400
What type of chemical reaction is this? NH(sub2) + 3H( sub 2)>>2NH(sub3)
Synthesis or combination – two elements combined together
400
What is the equation for density?
D=m/v or density= mass/volume
500
Physical or chemical change? Water boiling into steam
Physical change (change of state is a physical change- still H2O either way)
500
Is cooking an egg a physical or chemical change
Chemical because the heat changes the structure of the egg
500
How many atoms of each element are in the following formula? 4(NH2)2CO
N=8 H=16 C=4 O=4
500
What type of chemical reaction is this? Na(sub2) S + HCL>>> NaCl +H(sub2) S
Double displacement reaction – two elements switched places
500
Explain the difference between a chemical and physical change
Chemical changes result in a new substance being formed. The elements are rearranged. Physical changes only change how the substance looks or what state it’s in