Final test Flashcards
What are the building blocks of all matter?
B. Atoms
Which of the following conversion factors would you use to change 18 kilometers to meters?
A. 100m/1km
On the celsius scale, at what temperature does water boil?
C. 100 degrees
If the relationship between the manipulated variable and the responding variable is a direct proportion what will a line graph of this relationship look like?
A. straight line
Which of the following are pure substances?
B. Compounds
If a material contains 3 elements joined in a fixed proportion it is a
D. Compound
Which of the following is a characteristic of a mixture
A. Has varying properties
Which of the following is a heterogeneous mixture?
C. A jar of mixed nuts
A mixture can be classified as a solution, suspension, or colloid based on the
B. Size of its largest particles
Which of the following has the highest viscosity?
A. Corn Syrup
A substance has a melting point of 0ºC and a boiling point of 100ºC. The substance is most likely
A. Water
A material that is malleable and conducts electricity is most likely
C. A metal
What physical properties of nylon and leather make them good materials to use for shoelaces?
B. Durability and flexibility
Which of the following materials is useful for making molds because it has a low melting point?
D. Wax
When a physical change in a sample occurs, which of the following does NOT change?
D. Composition
Which of the following is NOT a clue that a chemical change has occurred?
D. Change in shape
Matter that has a definite volume but no definite shape is a
A. Liquid
Forces of attraction limit the motion of particles most in
B. A solid
What is the result of a force distributed over an area?
C. Pressure
Raising the temperature of a gas will increase its pressure if the volume of the gas
C. and the number of particles are constant
The phase change occurs when water changes from a solid to a liquid?
Melting
The phase change that is reverse of condensation is
Vaporization
Which statement about subatomic particles is true?
D. An electron has far less mass than either a proton or neutron.
Which of the following is unique for any given element?
C. Number of protons
Suppose an atom has amass number of 35 which statement is true beyond any doubt
D. the number of protons in the nucleus does not equal the number of neutrons.
Mendeleev changed the known chemical elements in a table according to the increasing
D. Mass
Which general statement does NOT apply to metals?
C. Most Metals are brittle
The column on the far left of the periodic table contains the
A. Most Reactive metals
Which of the following Group 1A elements is the most reactive?
A. Cs
which of the following groups contain three elements with stable electron configurations?
D. Helium, Xenon, neon
Study the electron dot diagram for lithium carbon fluoride and neon choose the statement that correctly identifies the most stable of elements
D. Neon is most stable element because its highest occupied energy level is filled.
The SI unit of mass is the ____.
Kilogram
A measurement Must include but a number and a_____.
Unit
Pure substances are either _____ or ____.
Elements; Compounds
A material used for electrical wiring would need to have good ____.
Conductivity
When water boils from that molecules have enough _____ to overcome the attraction of neighboring molecules
Kinetic energy
Water boils when its vapor pressure becomes equal to __ Pressure.
Atmospheric
What type of graph would be the best to use to compare the levels of lead contamination in six water wells?
Bar graph
Based on the information which substance would be solid at 10.0 C
Acetic acid, and gold
It’s on the data in figure 2-2 is Mixture C a homogeneous or heterogeneous mixture?
It is heterogeneous because it can be filtrated and scattered by light
Which of the mixtures is a colloid?
A. It does scatter light but cannot be separated or filtered
Which of the mixtures is a solution
B. It does not scatter light and does not separate
rank the mixtures in order of the size of the particles starting with the smallest particles
BAC
What period and group is an atom of this element in
Period-3 group-7
Find density
Density= Mass/Volume
AB+C=AC+B is an example of what type of reaction?
Single deplacement
2 H2O= H2+O2 is an example of what type of reaction?
Decomposition
A+B=AB is an example of what type of reaction?
Synthesis
