Intro to Matter
The amount of space that matter in an object occupies
Flammability- Physical or chemical property?
Chemical
What are the 4 states of matter?
solid, liquid, gas, plasma
How do you find the number of neutrons in an element?
atomic mass-atomic number
By what process can heat be transferred through empty space that does not contain matter?
A. Conduction
B. Convection
C. Radiation
D. Temperature
C. radiation
The amount of matter in an object
Mass
Electrical Conductivity- Physical or Chemical Property
Physical
What are the arrangement of particles for the following: solid, liquid, gas
solid: particles close together and compact, low energy
liquid: particles have more energy than solid, flow by each other
gas: particles have high energy no definite shape
Which of these statements about the periodic table is true?
A. Elements have similar characteristics
B. elements have same atomic mass
C. Elements have same atomic number
D. Elements have similar numbers of neutrons
A. Elements have similar characteristics
Why does the moon give the impression that you are bouncing while walking?
A. Mass on the moon decreases
B. Density on the Moon is higher than on Earth
C. Atmosphere of the moon
D. Weight on the moon depends on gravitational force.
D- gravitational force
The measure of the amount of matter in a given amount of space
Density
Sam finds a rock that is similar to the color of gold and wants to find out if it is real gold which of the following properties of matter could Sam use to determine if it is real gold?
A. Density
B. magnetism
C. Mass
D. Volume
Is this a Physical or chemical property?
Density-physical
When you increase the temperature in a chemical reaction what happens to the particles of the substance and the speed of the chemical reaction
The energy of particles increase, chemical reaction happens faster.
Pure substances
Which of the following causes condensation on outside of windows?
A. High humidity outside, cooler temperature inside
B. High Humidity outside, warmer temperature inside
C. High humidity inside, Cooler temperature outside
D. Low humidity inside, warmer temperature outside
A. high humidity outside, cooler temperature inside
Josie wants to calculate the volume of a marble. She performs the following tasks:
1. Place 250 mL of water in a graduated cylinder
2. Place the marble in the graduated cylinder
3. The water level in the graduated cylinder rises to 318mL
What is the Volume of the rock?
68 mL
What are the 5 signs of a chemical Change?
1. odor
2. bubbles forming(energy released)
3. Precipitate formed
4. color change
5. Gas released
What are the 3 types of heat transfer?
Conduction, convection, radiation
How do you find the number of protons and electrons in neutral element
The Atomic Number
What is the law of conservation of mass
Mass cannot be created nor destroyed
Density is the ratio Mass to Volume. John listed the density of 4 metals below at 20 degrees celsius
Brass 8.9 g/cm cubed
Gold 19.3 g/cm cubed
Iron 7.8 g/cm cubed
lead 11.3 g/cm cubed
If John has a 4cm cubed of each metal, which will have the greatest mass?
Gold
How do physical changes differ from chemical changes
chemical changes produce a new substance and physical changes do not.
Define the 3 types of heat transfer
Conduction: transfer of heat from one object to another(stove to pan)
Convection: transfer of heat in a liquid (boiling water/mantle)
Radiation: transfer of heat through waved (sun/microwave/campfire)
What will NOT happen when thermal energy flows in the molecules of a cup?
A.air will increase the temperature of the cup
B. Temperature of the cup and water will change until it reaches equilibrium
C. Heat will flow from the cooler object to warmer object
D. Thermal energy will move back and forth from ice water to air in the room.
D-thermal energy will move back and forth