Chemical change
how many substances join to form new chemical properties.
two or more
whipping eggs, boiling water,dissolving sugar, dicing vegetables are 4 examples of what
physical change
Mixing baking soda and vinegar will create what type of gas?
What is Carbon Dioxide.
A physical change does not produce a what
new substance
Chemical change
One way to know a chemical change occured
answers vary
changing the state of matter, changing the shape, changing the texture and changing the color our what change
physical change
Leaves change color in the fall because their chemical makeup is changing. What change am I?
Chemical change a change in color.
Paper is still paper if it is ripped in half and crumpled up. What am I?
What is a physical change?
Physical change
As the thermal heat in an object goes up, what happens to the substance
it changes state
Describe your favorite group halloween costume for 4 or more people
be descriptive for credit
Alka-seltzer and bubbles in soda are what form
A chemical change.
Free point
3 free points
describe the particles in a solid
tightly packed and vibrating
when there is a chemical change the atoms in the substance do what
break apart and reconnect in a different formation
what are the main states of mater
solid,liquid,gas
What type of change occurs when you cut a PBJ sandwich in half and how do you know
physical because it is still a sandwich
In a physical change the appearance of matter changes, but its chemical composition remains__________
Remains the same.
what is the difference between a physical change and chemical change
A chemical change there is a change in the substance and in physical change there is a difference in the appearance
Melting snow/dissolving sugar is an example of ?
What is physical change?
A change that occurs when substances change into something new and different is?
What is chemical Change?
Words that describe the ability of a substance to change into new and different matter
What are chemical properties?
all matter is made up of __________.
atoms
When a substance releases heat this is __________ reaction.
Exothermic reactions.