Scientific Measurement
Convert the following: 41 kg to cg
What is 4,100,000 cg?
The state in which the particles are tightly packed together with the least energy?
What a solid?
Hi! Our family is the most reactive nonmetals.
Who are the halogens?
The oxidation number of fluorine.
What is -1?
The letter that shows a balanced chemical equation.
A. Na + Cl2 ----> NaCl
B. Mg + Cl2 ----> MgCl2
C. H2 + O2 ----> H2O
What is B?
Mg + Cl2 ----> MgCl2
This number in scientific notation: 58067
What is 5.8067 x 104?
The way a compound can be broken apart.
What is chemical means?
Hi. I am in the alkali metal family. I have four energy levels.
What is Potassium?
The type of bond will carbon and oxygen form.
What is a covalent bond?
The number of hydrogen atoms on the reactant side of this chemical equation.
2H2 + O2 ----> 2H2O
What is four atoms?
Calculate the density of an object that has a mass of 25g and a volume of 5cm³.
What 5 g/cm3?
The law of conservation of matter says this.
What is "matter cannot be created or destroyed"?
Hi. I am a nonmetal, but I am on the wrong side of the periodic table. I sit with the alkali metal family, but I am not one of them.
Who is Hydrogen?
A type of bond that holds water (H2O) together.
What is a covalent bond?
This is the type of reaction (out of the five types) shown below...
Zn + CuCl2 ----> ZnCl2 + Cu
What is a single replacement reaction?
The mass of an object is 100 grams and its volume is 50 milliliters. This is what it will do if placed in water.
What is sink?
This is an element with a same number of protons, but a different number of neutrons.
What is an isotope?
The number of electrons sulfur has in its valence electron shell?
What is six?
The type of elements that can form a covalent bond.
What is nonmetals?
The number of Nitrogen atoms on the reactants side of this reaction.
3N2 + H2 ----> 2NH3
What is six?
The density ( in g/cm3) of an object that has a mass of 1000 milligrams and a volume is 0.005 liters.
What is 0.2 g/cm3?
Give an example of a homogenous mixture.
What is...
This element is in the fourth period on the periodic table and is part of the alkaline earth metals.
What is calcium?
The chemical formula that results when we combine potassium and oxygen.
What is K2O?
What are the five indicators that a chemical reaction has occurred?
1. Color change
2. Gas produced
3. Light
4. Formation of a precipitate
5. Change in temperature