Chapter 1 - Foundations
A way to show very large and very small numbers in a concise format.
What is scientific notation?
Matter is neither created or destroyed.
What is the law of conservation of mass?
The number of neutrons in Magnesium.
What is twelve (12)?
Atoms that have the same atomic number but different mass numbers.
What are isotopes?
Changes that do not alter the identity of the substance.
A physical property of a substance defined as the mass per unit volume.
What is density?
They of elements on the left-hand side of the periodic table.
What are metals?
100 cm = ____ m
What is one?
A statement that describes observations that are true in widely varying circumstances. However, they do not explain why something occurs.
What is scientific law?
Mixtures in which the components are evenly blended throughout.
What are homogenous mixtures?
A measure of how reliable measurement are in reflecting a true value.
What is accuracy?
An atom or group with and overall charge.
What are ions?
Daily DOUBLE!!!!
Tell me how many times you want me to push the point buttons i.e. (x * 300).
You can pass or see the question. If you elect to see the question you can NO LONGER PASS!!!
A plane flies at a speed of 540 miles per hour. What is this in miles per second?
Fractions that are used to convert from one unit to another.
What are Conversion Factors?
A change that releases heat energy.
What is exothermic change?
Daily DOUBLE!!!!
Tell me how many times you want me to push the point buttons i.e. (x * 400).
You can pass or see the question. If you elect to see the question you can NO LONGER PASS!!!
Identify the number of significant digits in the following measure number:
132010
A positively charges subatomic particle that resides in the nucleus of the atom.
What are protons?
2.54 cm = ___ in
Elements in columns 1A - 8A.
What are the main-group (representative) elements?
Energy that is stored.
The official SI scale for measuring temperature.
What is Kelvin?
The nonmetal elements in column 8A (18) of the periodic table.
What are nobel gases?
____ °C is the temperature if you had 273 Kelvin
What is zero?
A theory describing matter in terms of fundamental units called atoms.
What is atomic theory?