Atomic Number
The atomic number indicates the number of ___________in the nucleus of the atom.
What are electrons?
The periodic table lists elements in order of ___________atomic number. (increasing or decreasing?)
What is increasing?
The formation of rust is an example of a ___________change.
What is chemical?
The formula for density is...
What is Mass/Volume?
The full name of the element whose atomic number is 14.
What is Silicon?
The region in the center of the atom which contains protons and neutrons is called the __________.
What is the nucleus?
On the periodic table, rows are called____________and columns are called________.
What are periods and groups?
Color, shape, and texture are all examples of ____________properties.
What are physical properties?
The mass of a given object is 80 grams. The volume is 16 ml. What is the density of the object?
The full name of the element who's atomic number is equal to the number of teachers in the 7th grade? (Including Mrs. Staley)
What is Nitrogen?
What is copper?
The element in period 4 group 18 is___________.
What is Krypton?
What is physical?
The volume of a given object is 107.6 mL. The mass is 22 grams. What is the density of the object? Round to the nearest hundredth (two numbers after the decimal point)
What is 0.20 g/ml?
The atomic number of the element that is located in period 4 group 17.
What is Bromine?
A Nitrogen atom has ___________less protons than a Fluorine atom.
What is 2?
These elements are often solids at room temperature, they are good conductors of electricity, they are ductile and malleable, and are often shiny.
What are metals?
The statue of liberty used to be made of copper. It is now turquoise in color. What is the name of the process that occurred to cause this change? Is it a physical change or chemical change?
What is tarnish? What is chemical change?
What is 562.5 grams?
Use PEMDAS
What is Ca?
An element is highly reactive. Found in group 1 and it has the symbol Rb. How many protons, neutrons, and electrons does it have?
These elements fall along a zigzag line and possess properties of both metals and nonmetals. These elements are called_____________.
What are metalloids?
a 5th grader from Hickman rips a paper in half and says that he just created a chemical change because he changed the paper from 1 pieces into two. Is he correct? If not, please write at least two sentences correcting his reasoning.
What is a chemical change must involve a change from one substance into another. The paper still remained paper, it merely changed sizes which is an example of a physical (not a chemical) change.
IV Fluids= 2.0 g/ml
Rubbing Alcohol= 0.65 g.ml
Penicillin= 1.54 g/ml
What is penicillin?