blue takis
baking a cake, burn paper
What are chemical changes?
flammability, ability to rust, acidity
fire burning, iron rusting
mass, weight, color, shape
What are physical properties?
solubility, magnetism, conduct electricity
What are physical properties?
gravity, magnetism, electricity
What is things that are not matter?
juice, water
What is liquid?
desk, book, pencil
this states that mass stays the same after a chemical reaction
What is the law of conservation of mass?
hydrogen, helium, oxygen
What is examples of gas?
tightly packed
What is the way the particles are in a solid?
strong attractive forces
What is the force between the particles in a solid?
this is what causes a chemical change when cooking
What is when thermal energy (heat) is being added?
formation of a gas, formation of a precipitate, light or heat released
What is signs a chemical change has taken place?
What are the particles in a gas?
something we observe that doesn't change the identity of the substance
What is a physical property?
these may slip past each other and not tightly packed
What are the particles in a liquid?
lemon juice, water, and sugar mixed to make lemonade
What is a physical change?
weakest attractive forces
What are the force between the particles in a gas
if it has mass and takes up space
What is How to know if something is matter?
change where the appearance is different but doesn't change what the substance is; change where two substances combine to create a new substance
What is physical change and chemical change?
change in shape, change in form, change in temperature
What is signs to determine if a change if physical?
water turning to ice, cutting a piece of cake
What are examples of physical change?
all chemical changes and some physical changes such as pottery breaking
What are Changes that cannot be reversed?
d=m/v
What is the formula for calculating density?
(How to find density?)