Electricity and Current
A charge imbalance leads to what type of electricity?
Static Electricity
Where is force the strongest with magnets?
At the poles
Give one example of a compound
Label the elements
H2O
C6H12O6
NaCl
What are the 3 main states of matter?
Solid, liquid, gas
What is the voltage difference if there is a current of 2amps and a resistance of 3ohms?
6 volts
In 'charge rules' what charges are attracted to each other?
AND what charges repel each other?
Opposites attract
Like repels
What direction does the magnetic field flow?
North to South
Give three examples of physical properties
color, texture, mass, melting point, boiling point, viscosity, solubility, density
Which state of matter has fixed volume but no fixed shape?
Liquid
What is the voltage difference if there is a current of 5amps and a resistance of 6ohms?
30 volts
What materials allow the flow of electrons?
What materials do not allow the flow of electrons?
Conductors
Insulators
What is ferromagnetism?
When objects that are not magnetic are placed into a magnetic field and become magnetized
Give three examples of chemical properties
combustibility
reactivity
oxidation
Which state of matter has a fixed volume and fixed shape?
What is the kinetic energy like in this shape?
Solid
very low KE
Find the density of a 20g box with a volume of 4cm3
Density= 5g/cm3
What kind of circuit has one path?
What kind of circuit has multiple paths?
Series
Parallel
What is an electromagnet?
A magnet made by placing a piece of iron inside a current carrying wire
what is the law of conservation of matter?
Matter cannot be created or destroyed, it can only change forms.
What state change happens when a solid turns into a liquid?
What type of head is needed?
Melting
Heat of fusion
Find the volume of a box that measures 10cm in length, 5cm in width, and 6cm in height.
300cm3
Draw a series circuit with a batter, one light bulb, one voltmeter, and a closed switch.
Give two real world examples of electromagnets
Electric motor
Generator
What is the difference between a homogeneous mixture and a heterogeneous mixture?
Homogeneous mixtures have even distribution
Heterogeneous mixtures have uneven distribution
What state change happens when a liquid turns into a gas?
What type of heat is needed?
Boiling
Heat of vaporization
A marble is put into 12mL of water. The water rises to 14mL after the marble is placed. The marble has a mass of 4g. What is the density of the marble?
2g/mL