What are special characteristics that pure substances have?
100
What is the formula for density?
What is D=M/V
100
When a solid turns into a gas, what do we call this phase?
What is sublimation?
100
What is all matter made up of?
What are particles?
200
Which of the following is not a pure substance:
a) water b) carbon c) gold d) milk
What is milk?
200
Which of the following is not a physical property?
a) color b) corrosion c) melting point d) magnetism
What is b) corrosion?
200
What the units used in density?
What is g/mL or g/cm3
200
During evaporation, when a liquid becomes a gas, is energy added or removed?
What is added?
200
When heat is added to particles, what happens to them?
What is they move faster?
300
What is a compound?
What is a pure substance that is made up of two or more elements?
300
Which of the following is not a chemical property?
a) corrodes b) reacts with acid c) flammability d) solubility
What is d) solubility?
300
A piece of aluminum has a mass of 40g and a volume of 14.8 cm3. What is it's density?
What is 2.70 g/cm3
300
Baking powder causes bread to rise. Is this a chemical or a physical change?
What is chemical?
300
Use KMT to explain how sugar would dissolve faster in really hot water?
What is particles of sugar are moving faster so they react with water faster and will dissolve faster
400
What is the difference between homogeneous and heterogeneous mixtures?
What is a mixture that has substances that are evenly mixed together and what is a mixture where the mixture is not uniform.
400
What are the three states of matter?
What are gases, liquids and solids?
400
I have a Douglas tree that has a density of 0.53 g/mL. Will it float or sink in water? Why?
What is floats because it is less dense than 1 g/mL
400
Which of the following is not an example of a chemical change?
a) digestion of food b) corrosion of nails
c) cooking bacon d) mixing water and salt
What is d) mixing water and salt?
400
According to the KMT, what is the difference between solids, liquids and gases?
What is particles are close together and can vibrate in place, particles are close together and can move past each other, particles are very far apart and are moving fast
500
Give two examples of an element, two examples of a compound, two examples of homogeneous mixtures and two examples of heterogeneous mixtures.
What is carbon, hydrogen, oxygen, water, salt, pop, milk, soil, gravel, granola
500
What is the difference between malleability and ductility?
What is the ability to be beaten in to this sheets and what is the ability to be stretched into wires?
500
I find a gold ring that has a density of 19.3 g/mL and has a mass of 200g. What is the volume of the gold ring?
What is 10.4 mL?
500
How can you tell the difference between a physical change and a chemical change? List three reasons for each.
What is phase change, reversible and no new substance is formed and what is irreversible, new substance forms and new properties are observed
500
Name 4 principles of the KMT.
What are all matter is made up of tiny particles, different substances have different particles, particles are in constant motion, when heated, particles move faster and attraction between particles decreases with an increase in the distance between them.