Elements
The definition of an element
What is a pure substance that is only made of one type of atom?
The definition of an ion
What is an element with a charge?
The number of rows found on the periodic table.
What is 7?
The definition of physical change.
Bits and bites are an example of this.
What is a mechanical mixture/heterogeneous mixture?
The three subatomic particles in each atom.
What are protons, neutrons, and electrons?
The definition of a compound
What is two or more elements that cannot be separated without a chemical reaction. ex. salt
What are 18 groups?
The definition of chemical change.
What is a reaction that results in a new substance. A reaction that cannot be undone. ex. frying an egg
What is a Lewis Dot structure?
The two components of the nucleus.
What are the protons and neutrons?
The name for a negative ion.
What is an anion?
The way to calculate neutrons for any given element.
What is atomic mass - atomic number (# of protons)
A log is sawed in half. This is an example of what kind of change.
What is physical change?
The definition of matter.
What is anything that has mass and takes up space?
Electrons are equal to these in a neutral atom.
What are protons?
The name for a positive ion.
What is a cation?
Elements in the same row have the same number of these.
What are orbitals?
A Kool-aid drink mix is put into a glass of water. The new solution is now blue. What kind of change is this?
What is a physical change (dissolving).
The acronym WHMIS stands for this.
What is Workplace Hazardous Materials Information System?
Which of the following is an element?
Bronze, Air, Titanium
What is titanium.
What element has 16 protons, 18 electrons? What is the charge? What type of ion is it?
What is a sulphur anion, S2-?
Which group of the periodic table do all elements want to be like? Why?
What is the noble gases because they have a full outer orbital of electrons, making them stable.
The 5 different indicators of chemical change.
What are:
giving off colour/light, giving off odour, giving off bubbles, creating a precipitate, giving off heat
The mass of a solution is 125 grams, and the volume that it takes up is 400 ml. What is the density of the solution?
What is 0.3125 g/ml?