Which of the following is a physical property? Which of the following items is a pure substance? What is the value of 98 °F in units of °C? Convert 68852 millijoules into Calories. (Write your answer in the decimal form? When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This process is a: Some groceries are placed in a deep freezer that is set at 18 oF. What is this temperature in Celsius? Thermal energy is:
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
|
Which of the following is a physical property? |
|
|
Which of the following items is a pure substance? |
|
What is the value of 98 °F in units of °C?
Convert 68852 millijoules into Calories. (Write your answer in the decimal form?
When table salt is placed in water and stirred it dissolves and a clear liquid is obtained. This process is a:
Some groceries are placed in a deep freezer that is set at 18 oF. What is this temperature in Celsius?
Thermal energy is:
Which of the following statements is true about a compound?
How many joules are there in a 255 Calorie snack bar?
Which of the following is a physical property?
If the monthly electricity consumption of a household is 6,619 kWh, what is this consumption expressed in kJ?
Which of the following items is a chemical property?
If you hold a solid piece of pure gallium metal in your hand, your body heat will melt the gallium into its liquid form. This illustrates which of the following?
On a cold day the atmospheric temperature is reported as 12.9oF. What is this temperature in Kelvin? (Please note that the constant 273.15 is an exact number).
Which of the following is a heterogeneous mixture?
In an exothermic reaction:
|
The rusting of iron is due to its reaction with oxygen. An iron nail weighing 8.531 g was left outdoors for a period of one year. After the one year, it was found to have a mass of 12.197 g. How many grams of oxygen did the nail react with? |
|
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
