Topic 1
Name examples of chemical change?
iron rust,gas burning, eggs cooking, bread rising
Examples of Physical Change
Cutting bread, dissolving matter, changing density, and such
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
how many substances join to form new chemical properties.
two or more
changing the state changing the shape, changing the texture and changing the color are what change
physical change
Leaves change colour 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?
What is a Physical change
A change that occurs when substances change into something new and different is?
What is chemical Change?
Physical does not turn into ___ __________
a substance
Alka-seltzer and bubbles in soda are what form
A chemical change.
mixing sand and water
physical
An _______ reaction occurs when a substance absorbs heat.
What is an endothermic reaction?
Evidence of this change includes a change on odor, change in color, bubbles, or heat given off is what type of change?
What is a Chemical change?
what are the main states of matter
solid,liquid,gas
Mixing silver nitrate with sodium chlorine will produce silver chloride as a precipitate.
Chemical change- formation of a precipitate.
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
Chemical change there is change in the substance and physical change there is change in the appearance
What are the evidences that you would use to determine baking a cake is chemical change ?
Melting snow/dissolving sugar is an example of ?
What is physical change.
Words that describe the characteristics of a chemical change?
What are giving off energy (light, sound, temperature), odor, and others
Filling a bowl with different colored candies
What is physical change.
When a substance releases heat this is __________ reaction.
Exothermic reactions.