Classifying Matter
This is the smallest unit of matter.
What is an atom?
This physical property is the ability for a substance to allow heat to flow through it.
What is conductivity?
These are 2 types of pure substances.
What are elements and compounds.
Bubbles indicated the formation of this.
What is a gas?
A type of mixture that has to be separated by filtration or distillation.
Carbon dioxide is an example of this.
What is a compound?
A physical change is described as...
Double: Compare and contrast physical and chemical change.
What is a change that doesn't change the chemical composition of a substance.
They both are a change, one is in physical structure the other is chemical structure.
This is an example of an element.
What is H, B, He, F, O, S....
Spilling bleach on your jeans would produce this type of change.
What is chemical?
T or F: The substances of a mixture all have to be equal in content.
False, ratio can vary.
Chex mix, and M&M's are examples of this type of mixture.
What is a heterogeneous mixture?
This physical property is used to see if a substance is truly pure and "real".
What is density?
This is what it means to be a pure substance.
What is only made of 1 type of atom or 1 type of compound?
Gold, silver, and platinum are commonly used to make jewelry. What can you infer about the reactivity of these substances?
What is that they have a low reactivity. If it was high we couldn't wear it.
Solutions, suspension and colloids are types of this.
Double: describe what each is.
What are mixtures?
Solution = small particles, clear, no layers
Suspension = large particles, cloudy, layers
Colloid = intermediate particles, cloudy, no layers
Carbon is this type of matter.
What is an element?
If an object is hit and breaks apart does it have a high or low malleablility?
What is low malleability?
Which can be broken down: an atom, element, or compound?
What is a compound?
These are the 3 indicators of a chemical change.
Double: How is a _______ formed.
What are color change, formation of gas, and formation of precipitate.
Precipitate is formed by 2 liquids coming together to form a solid.
This happens to the particles in suspensions over time.
What is form layers?
Give an example of an element, compound, solution, suspension, and colloid.
What are helium, H2O, salt water, muddy water, fog
You could do this to figure out whether one object is harder than the other.
What is use them to scratch one another?
This is the difference between and element and compound.
What is elements are made of one type of atoms and compounds are made of more than one type.
Give an example of a chemical change.
What is baking a cake, fireworks, camp fire, etc.
Describe how filtration separates mixtures.
What is it separate the large particles from the small particles?