Any property that you can observe by looking at or measuring the matter. It does not change the identity of the matter.
What are PHYSICAL PROPERTIES?
200
Calculate the DENSITY of an object that has a mass of 60g and a volume of 5g. (Must also have the correct units!)
What is 12g/cm3
200
This is the area where protons and neutrons are located inside an atom.
What is the NUCLEUS
200
This is a group of two or more ATOMS joined together by chemical bonds.
What is a MOLECULE
300
Examples of this include: rusting and flammability.
What is CHEMICAL PROPERTIES?
300
Will an object that has a density of 0.786g/cm3 sink or float in water?
FLOAT. Water's density if 1g/cm3, so since 0.786 is less than 1, it will float.
300
Lithium, Potassium, and Caesium are all located in this group.
What is the ALKALI METALS.
300
A substance in which a solute dissolves is the:
SOLVENT
300
State the Law of Conservation of Mass
Changes to matter does not create nor destroy mass.
400
This type of property does NOT depend on the amount of the substance. Examples include: boiling point and solubility.
What is INTRINSIC PHYSICAL PROPERTIES.
400
Describe how the WEIGHT of a space shuttle would change as it leaves Earth.
The weight of the shuttle would DECREASE as it enters space because the pull of gravity DECREASES as you leave Earth and enter into space.
400
How many and what type of atoms are in HS2
What is: Hydrogen = 1 and Sulfur = 2
400
Is tea an example of a compound, mixture, or solution?
What is a SOLUTION - its parts are evenly distributed throughout.
400
Describe what happens to the arrangement and motion of water particles as a block of ice melts.
Adding heat causes the particles to spread out and move faster.
500
Compare the boiling points of 50mL of water and 500mL of water.
They will be same - boiling point is an INTRINSIC property, meaning it does not depend on how much of the substance you have.
500
How would you measure the VOLUME of a pen?
Use DISPLACEMENT.
500
The number of neutrons in an uncharged atom is 2 less than the number of protons. The atomic mass of this atom is 14.
How many protons, neutrons, and electrons are in this atom?
Protons = 14
Electrons = 14
Neutrons = 12
500
Compare the molecules in a grain of salt to a block of salt.
They are the SAME - molecules are a fixed substance which means they will be same composition no matter the amount.
500
A scientist melts 30g of ice using a hot plate. Only 5g of ice remained after 10min. What explains the other amount?