Chemical change
what are 4 examples of chemical change
iron rust,gas burning, eggs cooking, bread rising
whipping eggs, boiling water,dissolving sugar, dicing vegetables are 4 examples of what
physical change
what produces when a chemical change reaction is released
gas
a physical change does not produce a what
new substance
what 2 things cause the temperature to decrease
Baking soda and vinegar
how many substances join to form new chemical properties.
two or more
changing the state of matter, changing the shape, changing the texture and changing the color our what change
physical change
Occurs when what molecules are interacted and the molecules change into a new substance
Chemical Reaction
is shredding paper a physical change
yes
a chemical reaction between substances usually include oxygen accompanied by giving what and or what
heat and light
when a chemical reaction between substances usually including what to give heat
oxygen
what doesn't change into anything new
a substance
Alka-seltzer and bubbles in soda are what form
2 examples of bubbles form
mixing sand and water
physical
what temperature increases to fight infections
Body temperature
what are 3 examples of a chemical reaction
wood burning,candles,rust
solid,liquid,gas
Is a chemical bonding energy is released or absorbed making their surrounding hotter or cooler a unexpected color change or an unexpected temperature change
It's unexpected temperature change
burning toast
chemical change
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
Bonds between atoms are broken and created to form what
to form new molecules
changing the what or appearance of a substance
form
when a solid suddenly appears in a solution and settles to the bottom, and collects on another object, or makes the solution cloudy what is the form called
It's called precipitation
Melting an ice cube
physical
If you add salt to ice it is called? An what happens?
What is freezing point. What is melting