States of Matter
Elements represent unique forms of these little thingies. The building blocks of everything!
What are atoms?
Sometimes called group 8A or group 18 they are also know as this?
What are the noble gasses?
The significant figures of 0.0320
what is three?
The atomic number tells us this.
What is the number of Protons?
This is known as the universal solvent.
What is water?
A substance formed by chemically combining two or more atoms of different elements is known as
what is a compound
There are this many periods on the periodic table of the elements.
What is 7?
Which sentence best describes a scientific theory?
A. | It can never change. |
B. | It can change every time it is tested. |
C. | It can be proven conclusively. |
D. | It is well-tested and explains a wide range of observations. |
What is It is well-tested and explains a wide range of observations.
Name all 3 subatomic particles and their charges.
what are protons, neutrons and electrons
This is formed when a STRONG acid and STRONG base are put together.
What is salt and water?
The way in which increasing temperature affects the movement of molecules
What is makes the molecules move faster?
Substances that cannot be reduced to simpler substances are called
What are elements?
Which question would be the best high level scientific question?
A) Who made the first microscope?
B) Does the amount of salt in water affect the temperature at which it boils?
C) How many giraffes live in Africa?
D) How long ago did dinosaurs live on the Earth?
What is B) Does the amount of salt in water affect the temperature at which it boils?
Electron in the outermost energy level
What is a valence electron?
Bases increase the number of negatively charged _______ ions when dissolved in water.
What is hydroxide ions or OH- ions?
Name the two major properties of matter
What are chemical and physical?
The majority of the elements on the periodic table are this.
What are metals?
How many moles of oxygen are in 32 g?
What is 2 moles
How many protons, neutrons, and electrons are in Al3+?
What is 13 P, 14 N, 10 e
An acid is a compound that produces hydrogen ions in a solution. It has a pH
What is less than 7
This type of mixture looks uniform throughout. Saltwater is a good example.
What is a homogeneous mixture
The three classes of elements
What are metals, non-metals and metaloids?
9,870,000,000,000 in scientific notation.
9.87 x 1012
This law states that, despite chemical reactions or physical transformations, mass is conserved—that is, it cannot be created or destroyed
What is the Law of the Conservation of Mass
This increases the concentration of OH- in a solution.
What is a base?