Table of Contents
- 1 Which category of elements would be the least appropriate choice for making a container that can be dropped without shattering or breaking?
- 2 Why do you need to place the opening of the jar in a container of water quizlet?
- 3 Which category is not a type of element?
- 4 How did Lavoisier define an element?
- 5 Do gases have Colour?
Which category of elements would be the least appropriate choice for making a container that can be dropped without shattering or breaking?
Which category of element would be the least appropriate choice for making a container that can be dropped without shattering? Explain your answer. Nonmetal, because it tends to be brittle. How are metalloids different from metals?
Why do you need to place the opening of the jar in a container of water?
There is a logical Physics explanation why running it under hot water can make it easier to open. Running the lid under hot water may make your hands slip easier as well because the wet metal on your hand might have a different coefficient of friction, so drying the lid and your hands is recommended.
Why do you need to place the opening of the jar in a container of water quizlet?
Why do you need to place the opening of the jar in a container of water? To create a stable chamber.
Which substance is a colored gas?
Gases
| Name | Formula | Color |
|---|---|---|
| Chlorine | Cl2 | greenish yellow |
| Bromine | Br2 | red/brown |
| Iodine | I2 | dark purple |
| Chlorine dioxide | ClO2 | intense yellow |
Which category is not a type of element?
Answer: Option (D) Gases. Explanation: In Periodic table, various existing Chemical Elements are broadly categorized as Metals, Non-metals and Metalloids, based upon their properties.
Why does water stay in upside down glass?
When you first turn the cup upside down, the pressure of the air inside the cup and the air pressure outside the cup are equal. The pressure of the air outside the cup is now greater than the pressure inside the cup and the card stays in place.
How did Lavoisier define an element?
Lavoisier defined an element as a chemical substance that cannot be decomposed using current analytical methods. Mendeleev saw an element as a substance composed of atoms of the same atomic weight.
Are atoms made out of elements or are elements made out of atoms?
Atoms are always made out of elements. Atoms are sometimes made out of elements. They all have two letters in their atomic symbols. The have the same mass number.
Do gases have Colour?
Actually, gases aren’t invisible: many are quite brightly coloured. For example, nitrogen dioxide is brown-y orange, chlorine has a yellowish green hue and iodine vapour is a vivid purple (see image above).
What is color chemistry?
Color is everywhere – including in chemistry. A chemical gets its color by electrons absorbing energy and becoming excited. That excitation absorbs wavelengths of light; what we see is the complementary color of the absorbed wavelengths.