Conservation
Give me one example that proves the conservation of matter
possible answers: melting something, any chemical change, mixing two substances, etc.
Baking Soda + Vinegar create three things that prove a chemical reaction occurred
Bubbles, gas, & new substance
If I am mixing two substances together, what property am I testing for?
Malleability, solubility, flammability, or reactivity
Reactivity
Mass
how much something weighs
3 States of Matter
Solid, Liquid, Gas
20g water + 15g ice = ___g ice water
35g
What is the product of this chemical reaction?
Sodium + Chlorine = table salt
table salt
A substance can be dissolved in water, it is not flammable, and is not reactive. What is it?
Salt, baking soda, or aluminum
Salt
What type of reaction is being described:
New substance forms, distinct color change, strong odor, & irreversible
Chemical Change
What type of reaction is being described?
No color change, no new substance formed, & reversible
Physical Change
During a physical or chemical reaction, matter is
not created or destroyed, only transformed
Which of the following are the reactants of this chemical reaction?
Sodium Bicarbonate + Vinegar = Carbon Dioxide, Water, & Sodium Acetate
Sodium Bicarbonate & Vinegar
The property of a substances to be changed without changing the identity is the
Physical Property
Matter is not created or destroyed, only transformed
Law of Conservation of Matter
Anything that has mass AND takes up space is
What is the same on both sides of a chemical or physical reaction
Mass or amount of atoms
An ice cube melted in a glass of water. Did a chemical reaction occur? Why or why not?
Along the lines of:
No a chemical change did not occur because a new substance was not formed & the reaction is reversible
Which substance would I use to wire a home? They need to be non-flammable, malleable, conduct electricity, and be flexible.
Copper wire, cotton, aluminum, or plastic
Copper wire
The ability for a substance to be flattened and not broken
Malleability
Sollubility
the ability for a substance to dissolve in water
30g Vinegar + 4g Baking Soda = 20g product
Along the lines of:
Mass transformed to CO2 gas which escaped the system meaning the products in the system will not have the same mass as before the reaction.
Give me an example of a chemical change AND tell me which are the reactants and which are the products
Answers will vary. Reactants are the "ingredients" and products are the "new substance"
What is one property of baking soda? Besides the physical state of matter
Examples: Reactive with vinegar, non-flammable, dull, non-soluble, non-malleable
The smallest unit that makes up matter
Reactivity
The ability for one substance to react with another and cause a chemical reaction/change