Scientific Measurement
Convert the following: 41 kg to cg
What is 4,100,000 cg?
In which state are the particles tightly packed together with the least energy?
What a solid?
Hi! Our family are the most reactive nonmetals. Who are we?
Who are the halogens?
What is the oxidation number of fluorine?
What is -1?
Which of the following equations is balanced?
A. Na + Cl2 ----> NaCl
B. Mg + Cl2 ----> MgCl2
What is B?
Show this number is scientific notation: 58067
What is 5.8067 x 104?
What is chemical means?
Hi. I am in the alkali metal family. I have one valence electron in my fourth energy level. What is my name?
What is Potassium?
What is a covalent bond?
How many atoms of hydrogen are 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?
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 am I?
Who is Hydrogen?
What type of bonds holds water (H2O) together?
What is covalent bonds?
What type of reaction (out of the five types) is this an example of?
Zn + CuCl2 ----> ZnCl2 + Cu
What is a single replacement reaction?
The mass of an object is 100 grams and its volume is 50 milliliters. Will this object sink or float in water?
What is sink?
What is an isotope?
What is an element with a same number of protons, but a different number of neutrons?
How many electrons does sulfur have in its valence electron shell?
What is six?
What type of elements can form a covalent bond?
What is nonmetals?
What is six?
The mass of an object is 1000 milligrams and its volume is 0.005 liters. What is the density of this object (with proper standard units)?
What is 0.2 g/cm3?
Give an example of a homogenous mixture.
What is...
Hi! I am in the fourth period on the periodic table. My family is called the alkaline earth metals. What is my name?
What would be the chemical formula 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