The motion of particles in a solid: a) move freely and collide, b) slide around, c) vibrate in a fixed position
What is vibrate in a fixed position?
100
What are the particles called in the center of an atom?
What are protons and neutrons?
100
In the chemical formula NaHCO3, what does the 'C' stand for?
What is carbon?
100
When a chemical reaction occurs, like when mixing baking soda and vinegar, the mass after the reaction will:
What is be the same as the mass before the reaction?
100
Which element is unique because of its ability to make large combinations of bonds in living things? a) hydrogen, b) carbon, c) oxygen
What is carbon?
200
The difference between a gas and liquid is that only one: a) will take the shape of a container, b) has a fixed volume
What is has a fixed volume? A gases volume can expand or contract.
200
The name of the particle that orbits the nucleus?
What are electrons?
200
The elements located to the right of the zig-zag line one the periodic table.
What are nonmetals?
200
An example of a chemical change is NOT: a) gas formation, b) color change, c) precipitate, d) evaporation, e) exo/endothermic reaction
What is evaporation?
200
How many bonds can each carbon make? a) 4, b) 5, c) 6
What is four?
300
Molecular motion means: a) the rate in which molecules move in a substance, b) the molecules have freedom of movement
What is the rate at which molecules move in a substance.
300
The number of protons in an element is listed on the Periodic Table by this name.
What is the atomic number?
300
Which of the following is NOT a property of NONMETALS, such as sulfur? a) brittle, b) malleable, c) not conductors
What is malleable?
300
A student completes an experiment during lab and notices that the substances get hot. This is because: a) an exothermic reaction occurs b) an endothermic reaction occurs
What is an exothermic reaction occurs?
300
True or False: Carbon can combine with more carbons to make complex, long chains.
What is true?
400
Which phase change increases energy and molecular movement in a substance? a) freezing liquid to a solid, b) condensing a gas to liquid, c) melting a solid to a liquid
What is melting a solid to a liquid.
400
When 2 or more different elements combine they form: a) compound, b) molecule, c) new element
What is a compound?
400
Where are the NONREACTIVE elements, the NOBLE GASES, located on the Periodic Table? a) very LEFT column, b) along the ZIGZAG Line, c) very RIGHT column
What is the very RIGHT column?
400
A student tests an unknown substance with litmus paper and red cabbage juice. The litmus paper turns blue and the cabbage juice turns dark green indicating a pH of 9. This substance is:
What is a base?
400
Which element does not belong in organic chemistry? a) carbon, b) neon, c) hydrogen
What is neon?
500
Which is an example of a physical change? a) cooking muffins in an oven, b) melting gold to make jewelry, c) burning wood in the fireplace
What is melting gold to make a chain?
500
When compounds form, they combine to create new substances with different properties. Which is an example of a compound? a) O2, b) H2O, c) C6
What is H2O?
500
Which of the following is NOT a property of METALS, such as copper? a) soluble, b) conductor, c) ductile
What is soluble?
500
The student tests another unknown substance that changes litmus paper red, red cabbage juice orange, and has a pH of 2. This substance is:
What is an acid?
500
Which element does not belong in organic chemistry? a) phosphorous, b) nitrogen, c) chlorine