The variable that the scientist controls in an experiment. (hint " _______ " = "I")
What is the independent variable.
100
Salt water is an example of this type of mixture.
(Homogenous or heterogenous)
What is a homogenous mixture.
100
The type of charge that a proton has.
What is a positive charge.
100
How many electrons does Carbon have?
What is 6 electrons.
100
Covalent bonds form by doing this with their electrons.
What is SHARE their electrons.
200
Pick the best scientific question from the list below:
A. Who is the best basketball player of all time?
B. How many times can I go on my phone during class before it gets taken away?
C. Why are we learning science?
What is B: How many times can I go on my phone during class before it gets taken away.
200
Cereal is an example of this type of mixture.
Homogenous or heterogenous
What is a heterogenous mixture.
200
Which 2 things are equal to the atomic number of an element?
A. The protons and neutrons.
B. The protons and electrons.
C. The electrons and neutrons.
D. The mass and protons.
What is B, the protons and electrons.
200
How many valence electrons does Fluorine have?
What is 7 valence electrons.
200
An ionic bond is formed between a _________ and a ___________ , and the ____________ TRANSFERS an electron to the ________________ .
An ionic bond is formed between a metal and a non-metal , and the metal TRANSFERS electrons to the non-metal .
300
Inference or Observation?
All of the students in Ms. Allen's & Ms. Gibbon's class will do well on the final tomorrow.
What is an inference.
300
(part I) The particles of this type of matter are closely packed in a fixed pattern.
(solid, liquid or gas)
(part II) The particles of this type of matter move quickly and freely and take the shape of their containers.
(solid, liquid, or gas)
What is (part I) a solid and (part II) a gas.
300
This is what the outer electrons of an atom are called (the ones usually involved in bonding).
What are valence electrons.
300
Which is the smallest part of the atom?
A. electron
B. proton
C. neutron
D. nucleus
What is A, electron.
300
This is the other part of the name that you have to use when naming a covalent compound (you don't have to use it when naming ionic compounds).
What is the prefixes for the numbers!
400
At an imaginary high school, all of the students have to take the same final exam. One of the teachers wants to see if an extra review session helps her students do better. She conducts an extra review session for all of her students the weekend before the test. None of the other students in the school get any extra help. She then measures how her students (who got extra help) do on the test, compared to all of the other students in the school (who did not get extra help).
Name the experimental group.
Who are the students who got extra help.
400
What is the phase change called when a liquid changes to a gas. Give an example.
What is evaporation.
Examples: water changing to water vapor (or other correct examples)
400
Water is cooled from 30°C to -80°C at a constant pressure of 1atm. What phase change will it undergo?
What is freezing.
400
An atom of Sodium has 11 electrons, which correctly lists how they would be ordered in the electron shells from 1st on? (inner to outermost)
A. 4, 4, 3
B. 8, 3
C. 2, 8, 1
D. 2, 8, 18
What is C: 2, 8, 1.
400
What is the name of MgF2?
What is Magnesium Fluoride (you don't need to put the "di" in front of fluoride because it's an IONIC bond).
500
At an imaginary high school, all of the students have to take the same final exam. One of the teachers wants to see if an extra review session helps her students do better. She conducts an extra review session for all of her students the weekend before the test. None of the other students in the school get any extra help. She then measures how her students (who got extra help) do on the test, compared to all of the other students in the school (who did not get extra help).
Name the dependent variable.
What are the test scores.
500
If the temperature of a substance is increased, what happens to the atoms in the substance?
A. They move more quickly and gain energy.
B. They move more slowly and lose energy.
C. They increase in size.
D. They change from a solid to a gas.
What is A.
500
Give an example of both a physical and a chemical change.
Physical: color, odor, size, density, change of state, etc
Chemical: how it reacts with other things (such as oxygen), flammability, etc
500
Draw the Bohr model of Aluminum.
What is [see the board].
500
Name the 6 prefixes that are used for naming covalent compounds.
What is
Mono = 1
Di = 2
Tri = 3
Tetra = 4
Penta = 5
Hexa = 6