The elements that have characteristics of both metals and nonmetals.
What is metalloids?
100
If 100 cm = 1m, How many cm are in 5.25 m?
What is 525 cm?
100
Atoms of the same element that have a different number of neutrons.
What are isotopes?
100
This is a property that can be observed or measured.
What is a physical property?
100
What piece of equipment do I use if I want to measure the volume of a liquid?
What is a graduated cylinder?
200
These elements are the most reactive nonmetals.
What are halogens?
200
The density of a metal is 3.00 g/cm^3 and its volume is 50 cm^3. What is its mass?
What is 150g?
200
This is the part of the atom that has the most mass.
What is the nucleus?
200
This is another name for a chemical reaction.
What is a chemical change?
200
These are the starting substance in a chemical reaction.
What are reactants?
300
This is the name for the elements in group 2.
What are alkaline earth metals?
300
This is the true or correct answer according to a reliable source.
What is the accepted value?
300
This area of the atom takes up most of the space.
What is the area outside of the nucleus?
300
Which state of matter has an indefinite shape, but a definite volume?
What is a liquid?
300
Potassium has 3 isotopes. potassium-39 with an abundance of 93.25%, potassium-40 with an abundance of 1.17%, and potassium-41 with 6.73% abundance. What is the average atomic mass of potassium. Show work.
What is 39.1 amu?
400
These are the two periods of the inner transition metals.
What are the actinide and lanthanide series?
400
A box has a length of 10 cm, a width of 3 cm, and a height of 4 cm and a mass of 480g. What is its density?
What is 4 g/cm^3?
400
The smallest particle of an element that has the properties of that element.
What is atom?
400
What type of observation is: "The liquid is cloudy blue."
What is qualitative?
400
Is water an element or a compound?
What is a compound?
500
These are the most reactive metals.
What are alkali metals?
500
What is 3x10^8 divided by 1.5 x10-7?
What is 2x10^15
500
What is the charge of the nucleus? Explain why it has that charge.
What is positive? It has a positive charge because it contains protons and neutrons which are positive and neutral.
500
What is another name for a homogeneous mixture?
What is a solution?
500
What are the four indicators of a chemical reaction?
What is color change, solid formed, temperature changed, gas produced/odor change?