Mixtures and Solutions
When particles settle to the bottom of the cup or float to the top it is called a......
Suspensions
I remain the same, I do not
change, I make a fair test – name the
variable?
Controlled Variable
This is a change in a properties such as texture, shape, or state, but the chemical composition does not change.
This is a physical change.
How many plants does Mrs. T have in her classroom?
30
A chemical change has two parts to it and they are called?
Reactants and products
Name it when 2 or more substances when mixed together still remain separate?
A mixture
I change, I am the item that
is tested in an experiment – what
variable am I?
Independent Variable
This is a substances relationship between it's mass and how much space it takes up (volume).
Density
What is 1/4 of 100?
25
when a substance combines with another to form a new substance is what type of change?
A chemical change
When one substance dissolves completely into another it is called
A solution
I am observed, measured,
and recorded with a tool of
some kind. I am considered the
result of an experiment. What
variable am I?
Dependent Variable
What is the equation to solve for density of an object?
Mass / Volume = Density
What liquid on earth can be a solid, liquid, and gas at the same temperature?
What is water.
Two substances are mixed together and during the reactant phase of the chemical change the product gave off lots of heat this is called?
Exothermic reaction
A word that describes the amount that 1 substance can dissolve with another.
A solute
After testing the speed of 3 different sports cars over a 1 mile long track, in 3 trials.
NAME the: Controlled, Independent Dependent
variables.
1. Controlled variable is the 1 mile track and three trials.
2. The Independent variable is the three different race cars.
3. The dependent variable is the speed of the three different race cars.
A cube of lead is 450 grams and the volume of the lead is 200ml. What is the density of the lead cube?
2.70 g/ml
I am made with lots of holes but I can hold water what am I?
A sponge.
Lemon juice, sugar, and water are mixed together to create a solution that we call lemonade. What type of Ph does this solution have?
Acidic
This is 2 liquids that combine to make a solid
a precipitate
The same sunflowers and the same amount of sunlight.
What is more dense a pound of feathers or a pound of gold?
Gold is more dense
What is the hardest substance in our body?
Tooth Enamel
Balance the chemical equation
2Na + Cl ---------------->
2NaCl