States of Matter
Name the three states of matter.
Solid
Liquid
Gas
What is an example of a physical change?
Physical change is changes in matter that does not change what the matter is.
Ex: cutting, crushing, bending, mixing or dissolving (other answers vary).
What is a homogeneous mixture?
When a mixture looks as if it only contains one substance.
What numbers does the pH scale go to and from?
0-14
What is an example of a solid melting into a liquid?
Ice melting into water, a chocolate bar melting to eat with a fondue, etc.
What changes of matter does a solid go through when turned into a liquid?
melting
What is an example of a chemical change?
Chemical change is a change that causes a new substance to be formed.
Ex: burning, fizzing, foaming, bubbling, rusting, new substance is created, creates heat or cold, creates a new colour (other answers vary)
What is a heterogeneous mixture?
When a mixtures substances are all visible.
How does an acid taste?
acids taste sour
Balloons involve which 2 types of matter?
The ballon is a solid and the helium inside to blow up the balloon is a gas
What changes of matter does a liquid go through when turned into a solid?
freezing
True or False: burning a candle can be an example of a chemical change.
TRUE
What is an example of a heterogeneous mixture?
salad, pop and ice cubes, grass and sand, water and oil, raisins and water.
How does a base taste AND feel?
Bases taste bitter and they feel slippery or soapy.
If litmus paper turns blue for a base, what colour does it turn for an acid?
Litmus paper turns red when it touches an acid.
What changes of matter does a liquid go through when turned into a gas?
evaporation
True or False:nails rusting is an example of a physical change.
FALSE
What is an example of a homogeneous mixture?
salt and water, iced tea, chocolate milk, yogurt (no fruit pieces), sugar water.
Give and example of an base.
bleach, soap, laundry detergent, drain cleaner or ocean (salt) water
A candle burning is a:
physical change, chemical change, or both?
both- the wick burning is a chemical change and the wax melting is a physical change
What changes of matter does a gas go through when turned into a liquid?
condensation
True or False: cooking a hard boiled egg is an example of a physical change.
FALSE
Name 3 ways to seperate a mixture.
sieving, magnets, wind, water, evaporating, decanting, filtering, distilling, heating or liquefying.
Give an example of a acid.
fruit juice, hydrochloric acid, pop, urine, stomach acid, vinegar or milk
Making s'mores is a:
physical change, chemical change, or both?
both- cooking the marshmallow is a chemical change and putting it on the graham crackers and chocolate is a physical change.