The element which is a non-metal and present in the same group as lead is carbon as they both have four electrons in their valence shell.
An element is defined as a substance which cannot be broken down further into any other substance. Each element is made up of its own type of atom. Due to this reason all elements are different from one another.
Elements can be classified as metals and non-metals. Metals are shiny and conduct electricity and are all solids at room temperature except mercury. Non-metals do not conduct electricity and are mostly gases at room temperature except carbon and sulfur.
The number of protons in the nucleus is the defining property of an element and is related to the atomic number.All atoms with same atomic number are atoms of same element.
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Answer:
Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive when two parents have the genotype of allele like XXi XY in which the Xi will be the allele for the 25% of red eye color.
Explanation:
We know that punnet square is a diagrammatic representation to predict the result of cross as well as breeding experiment. This is being used for getting the probability of offspring with particular genotype. Based on the best possible answer if the two parents have the genotype of allele like XXi XY in which the Xi will be the allele for the red eye color. The eye color gene is present in the X chromosome.
Answer:
A
Explanation:
B) coffee is a weak acid while drain cleaner is a strong acid
C) oven cleaner is a weak acid while battery acid is a strong acid
D) soft drinking water is a weak base while soapy water is a strong base
According to the pH scale, baking soda is a weak base while bleach is a strong base. Therefore, option (A) is correct.
An acid is any substance that is capable of donating a proton to another substance. A base is a molecule or ion that is capable to accept a hydrogen ion from an acid.
Acidic substances are generally identified by their sour taste. An acid is commonly a molecule that can donate an H⁺ ion and can be energetically favorable after a loss of H⁺ ion. Acids are also known to turn blue litmus paper into the red.
Bases are characterized by a bitter taste and a slippery texture. A base t can dissolve in water is also referred as an alkali. When bases chemically react with acids, they yield salts and water as products. Bases are also known to turn red litmus paper into the blue.
The pH value of the acids lies between 0 to 7 and the pH value of the acids lies between 7 to 14. Baking soda is a weak base that has a pH value of around 8 to 9 and bleach is a strong base that has a pH value of around 13.
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Answer:
the answer is a
Explanation:
grass
B.
bacterium
C.
spider
D.
grasshopper
Answer:
more stable
Explanation:
In terms of ecological succession, a community tends to become more stable over time.
As an ecosystem changes over time, species best adapted to that habitat tend to replace other, lesser adapted species until an equilibrium is reached. When drastic changes in the numbers and types of species cease to occur, the community has reached a climax state.
First of all, what is electrolysis?
Electrolysis is the process of breaking down ionic substances using direct current.
Important points about electrolysis
→ Ionic substances contain particles called ions.
→ Electricity is the flow of electrons or ions. For electrolysis to work, the compound must contain ions. The ions must be free to move for electrolysis to occur and it can happen by melting or dissolving an ionic substance in water.
→ Positively charged ions move to the negative electrode. They receive electrons and are reduced. The positive ions move towards the negative electrode because they want to cancel each other out.
→ Negatively charged ions move to the positive electrode. They lose electrons and are oxidised. The substance that is broken down is called the electrolyte (an electrolyte is just a liquid or solution that can conduct electricity) . The negative ions move towards the positive electrode because they want to cancel each other out.
Metal ions form at the cathode and non-metal ions form at the anode
How I remember if an element is oxidised or reduced is by remembering OIL RIG
OIL = Oxidation is Loss (of electrons)
RIG = Reduction is Gain (of electrons)
1) The first step would be to clean the metal ring and sand it down because when the metal atoms from the electrolyte are deposited onto the ring, they will form a weak bond and they may simply 'fall' off. Also this could affect conductivity and the whole experiment. The more things you do accurately now, the more accurate your result will be.
2) You want to put the solution you are given in to the tank your going to be using.
3) This is basically the main part, you want to set up the circuit, I have attached a diagram at the bottom to show you the circuit. The copper rod will be the anode and the metal ring will be a cathode (ignore the elements).
4) Now turn on the circuit and you will start to see the solution spilt with the the solution now being split some going to the anode and some going the cathode.
5) Then a thin layer should form on the electrode.
Hope this helps :)