Density, Volume, and Mass
What is The amount of matter in an object?
Mass
When a substance is made up of 2 or more parts that have a uniform appearance is what type of mixture?
homogenous mixture
Give the 3 types of chemical changes
reactivity
oxidation
flammability
Give the 3 types of physical changes
boiling/melting point
conductivity
solubility
This type of separation only works on metals.
What is magnetism?
What is the definition of volume?
The amount of space an object takes up.
When a substance is made up of 2 or components that can easily be separated out.
Heterogeneous Mixture
A substance with high flammability will catch fire _____.
Easily
Give 2 examples of solubility
Sugar in Tea/Coffee, Salt in Soup, Carbonation in Soda, Ethanol in Water, Vitamin C in Water, Saltwater, Iron and Carbon
Separating solutions using heat. (Ex: the Sun drying up a puddle and leaving salt)
What is evaporation?
This property explains why some objects float and others sink. It is the relationship between mass and volume.
Density
saltwater, coffee, and air are examples of this type of mixture.
Homogeneous Mixture
When paper burns, it turns into carbon dioxide (CO2), water vapor (H2O), and solid ash. This is a chemical change because:
a.) The paper changed shape
b.) New substances were formed
c.) The paper/fire got hot
d.) The ash is a different color.
b.) New substances were formed
The ability of a material to allow electricity or heat to flow through it.
Conductivity
To separate a mixture of soil and water, what separation method is used?
Filtration
What is the density of an object that has a mass of 7g and a volume of 1.4cm3?
5g/cm3
Give 2 examples of heterogeneous mixutres
blood, chocolate chip cookie, salad, candy mix, pizza, sand in water, oil and water, salad dressing, trail mix, granite, concret, ice in water.
A measure of how easily a substance reacts with another substance.
Reactivity
Sugar in water is an example of this type of change.
Solubility
Filtration, Filters, and Sieves use this physical property to separate mixtures.
a.) Particle shape
b.) Particle mass
c.) Particle size
d.) Particle density
c.) Particle size
The density of a liquid is 6.0g/cm3 when it fills a container of volume 300cm3. What is the mass of the liquid in the container?
1,800g
How is a mixture different from a compound?
A mixture is a physical blend where parts keep their identities. A compound is a chemical combination of elements that forms a new substance.
Give 2 examples of oxidation.
BONUS POINTS: Name 4 examples
rusting, apple browning, bleaching clothes, combustion, tarnished silverware, statue of liberty changing color.
Why is it important that your cooking pans are good conductors and not flammable?
For even, efficient cooking and so it responds to changes in temperature. Non-flammable ensures safety by preventing the pan from catching on fire.
Centrifuge, Separating funnel and Paper Chromatography use this physical property to separate mixtures.
a.) Mass
b.) Volume
c.) Magnetism
d.) Density
d.) density