Wild
M,V,D
P vs. C
ECM
Waves
100
All accidents in the lab, no matter how minor, must be reported to:
A. the principal
B. the teacher.
C. the custodian
B. the teacher
100
The difference between mass and weight is the force of ….
Gravity
100
The change in matter in which the substance keeps the same identity.
Ex. Dissolving salt in water
What are physical changes
100
Name the three categories that elements are classified into.
Metals, nonmetals, and metalloids
100
Label the diagram below:
A = crest,
B = trough,
C = amplitude,
D = wavelength
200
A two part experiment that tests a hypothesis has a control and variable. Which of the two parts is there as a basis of comparison (the “normal” condition)?
What is the control?
200
The formula for density is…
D=mass/volume
200
The type of change that is easier to reverse.
Physical change
200
A type of matter that can be separated by physical means.
Mixture
200
Label A, B and C on the diagram below:
A = longitudinal,
B. Compression,
C. Rarefaction
300
In order for a hypothesis to be formulated, what step of the scientific method should be completed first?
Research
300
The density of water is…
D= 1.O g/cc
300
During a phase change, such as melting or boiling, the temperature…
A. Increases
B. Decreases
C. Stays the same
C. Stays the same
300
A chemical combination of matter that has a definite ratio is known as a compound. Which of the following is a compound?
A. Milk
B. Tap water
C. Salt
C. Salt (NaCl)
300
Which type of wave does not travel in a vacuum?
Sound
400
The number of neutrons in an atom of an element can be found by subtracting atomic mass by
Atomic number
400
When placed in water, a substance with a density of 2.5
g/cc would…
A. Float
B. Sink
B. Sink
400
If you burn 10 grams of paper in a CLOSED system, the mass of the trapped smoke and ash will be:
A. Exactly 10 grams
B. Less than 10 grams
C. More than 10 grams
A. Exactly 10 grams
400
Before heating the copper and sulfur in a test tube, which classification of matter applies?
A. Element
B. Compounds
C. Mixture
C. Mixture
400
Which part of the EMS has the highest frequency?
Gamma rays
500
Heat transfer through a liquid or gas is known as….
A. conduction
B. convection
C. Radiation
B. convection
500
As most substances heat up their volume increases, which causes their density to…
A. Increase
B. Decrease
C. Stay the same
B. decrease
500
This expression shows a ______ change.
Cu + S 🡪 CuS
Chemical
500
What is the correct order for separating a mixture of sand, salt, and iron filings?
A. Use magnet, add water, filter, evaporate
B. Add water, evaporate, filter, use magnet.
C. Add water, filter, evaporate, use magnet
A. Use magnet, add water, filter, evaporate.
500
Which waves on the EMS have the lowest energy?
Radio waves