Atoms, Molecules, Compounds and Mixtures
What are the three subatomic particles?
What is proton, neutron, and electron?
The periodic table is arranged in order of increasing
What is the atomic number?
What are the four states of matter?
What is solid, liquid, gas, and plasma?
Ice cream melting is an example of what type of change?
What is chemical change?
What states that matter cannot be created nor destroyed?
What is the law of conservation of matter?
What is the charge of an electron?
What is negative?
A vertical column on the periodic table is called a
What is a group or family?
What does not have a definite shape but does have a definite volume and its particles move quickly enough to slip past one another (solid, liquid, gas or plasma)
What is liquid?
How do you calculate density?
What is mass/volume?
What are the substances that are present before the reaction occurs and that are changed by the reaction
What is reactants?
What can be made up of two or more atoms of the same element, chemically bonded?
What is a molecule?
What is the atomic symbol and number for Potassium?
What is K, and 19?
What happens to the temperature of a solid as it melts?
What is it stays the same
When a substance changes form but does not lose its identity, it undergoes a
What is physical change?
What substances present after the reaction takes place
What are products?
Carbon dioxide is an example of a
What is a compound?
Radium is an element found in Group 2 and Period 7. In a normal radium atom, how many electron energy levels are present?
What is 7
In which state of matter do particles spread and fill the volume of the container that holds them?
What is liquid
A log burning is an example of
What is a chemical change?
How many oxygen atoms are present on the reactants side in in Na2O + H2O ➔
What is 2 oxygen atoms?
An unknown substance is provided in a science class. It consists of particles that are of different colors and different sizes and are unevenly distributed throughout the substance. This substance is
What is a mixture?
A student is investigating a sample of an element. The student observes that the element is solid, shiny, and can be bent into a new shape. The student is most likely observing (non-metal, metalloid, or metal)?
What is a metal?
What is the process of gas changing states to become a liquid?
What is condensation
A sample of aluminum has a volume of 3.0 cm3 and a mass of 8.1 g. What is the density of aluminum?
What is 2.7 g/cm3
Balance the following equation Na + ___ O2 --> ___ Na2O
What is 4Na + O2 --> 2Na2O?