CHEMISTRY HIGH SCHOOL

Which statement explains why increasing thetemperature increases the rate of a chemical
reaction, while other conditions remain the same?
(1) The reacting particles have less energy and
collide less frequently.
(2) The reacting particles have less energy and
collide more frequently.
(3) The reacting particles have more energy and
collide less frequently.
(4) The reacting particles have more energy and
collide more frequently.

Answers

Answer 1
Answer: The answer is (4) the particles have more energy and collide more frequently.

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From what class(es) of elements is the following compound made? copper || chloride metal and metalloid
metal and nonmetal
metalloid and nonmetal
two metals

Answers

Answer: The correct answer is metal and non-metal.

Explanation:

Elements are mainly divided into 3 classes in the periodic table.

1.) Metals: The element which lie on the left side of the periodic table are mainly metals. These elements loose electron easily and form positively charged species. These elements are present in the highest proportion in the periodic table.

2.) Non-metals: The elements which lie on the right side of the periodic table are considered as non-metals. These elements gain electrons easily and form negatively charged species.

3.) Metalloids: These lie between metals and non-metals and show the properties of both metals and non-metals.

Copper lie in the period 4 and group 11 of the periodic table and it can easily loose electron and hence, it is considered as a metal.

Chlorine lie in the period 3 and group 17 of the periodic table and it can easily gain electron and hence, considered as a non-metal.

Therefore, the correct answer is metal and non-metal.
Metal and non metal because copper is a metal and chloride is a non metal

Pleaseeee helpp its a HW question

will mark brainliest!!

Answers

How do i mark brainliest

A certain element has a melting point over 700 ∘C and a density less than 2.00 g/cm3. What is one possible identity for this element?

Answers

The only answer to an element that melts over 700 degrees Celcius and has a density of less than 2 g/cm3 is Beryllium. This element is rarely found anywhere in the entire universe. It's atomic number is 4 and it is created through stellar nucleosynthesis.
  The element is Beryllium

the reaction below shows how silver chloride can be synthesized. agno3 nacl nano3 agcl how many moles of silver chloride are produced from 15.0 mol of silver nitrate?

Answers

The balanced chemical reaction is:

AgNO3 + NaCl = AgCl + NaNO3

We are given the amount of silver nitrate to be used for the reaction. This will be the starting point of our calculations. 

15.0 mol AgNO3 ( 1 mol AgCl / 1 mol AgNO3 ) = 15.0 mol AgCl

What is significant about the temperature absolute zero

Answers

The significance of absolute zero temperature is that at this temperature the particles of matter have minimum motion.

What is matter?

Matter in chemistry, is defined as any kind of substance that has mass and occupies space that means it has volume .Matter is composed up of atoms which may or not be of same type.

Atoms are further made up of sub atomic particles which are the protons ,neutrons and the electrons .The matter can exist in various states such as solids, liquids and gases depending on the conditions of temperature and pressure.

The states of matter are inter convertible into each other by changing the parameters of temperature and pressure.The matter available always obeys law of conservation of matter as it is neither created nor destroyed.

Learn more about matter,here:

brainly.com/question/12972782

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0 K on the Kelvin scale, which is absolute temperature scale; and –273.15 degrees Celsius on the Celsius scale, thus world wide has come to an agreement saying absolute zero is precisely.

Elements are composed ofA) many type of atoms.

B) the same type of atom.

C) many different compounds.

D) the same type of compound.

Answers

The correct answer is B, 'the same type of atom'. By definition, an element is a single type of atom. They are the most basic forms of matter, and so they cannot be more than one kind of atom, and they also cannot be a compound, since compounds are made up of multiple atoms.

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