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The kenetic theory of matter states that atoms and molecules are?
Always moving.
What happens to atoms of A substance when heat is added?
When heat is added to a substance, the molecules and atoms vibrate faster.
Is a atom an biotic or abiotic?
since atoms are constantly moving, it with be biotic: with life.
What is a good science fair project name for melting chocolate?
"Brownian Motion and how it applies to everything" That would be a good name. Brownian Motion is the theory that all atoms are in a constant state of motion. You could explain how when heat energy is added it changes the physical characteristic of the chocolate from solid to liquid which happens because the atoms of the chocolate are moving at a faster rate constantly.
What is a why question for what makes ice melt?
Ice melts because the atoms around the ice are moving faster (because they are warmer). So the faster moving atoms bump into the slow ones (the ice), and make the slow particles move faster a little bit at a time. and the slow particles make the fast ones slow down a little bit. Until all particles are moving the same speed. this is how ice melts.
What happens to electronegativity as you go across a period?
Electronegativity increases as you go across a period from left to right due to a stronger pull on electrons by the increasing positive charge of the nucleus. This results in atoms becoming more effective at attracting electrons.
Moving across a period on the periodic table from left to right?
Moving across a period from left to right, the atomic number of the elements increases. This results in an increase in the number of protons and electrons, leading to a greater nuclear charge. As a result, the size of the atoms decreases while the electronegativity and ionization energy increase.
Nuclear charge increases across a period atoms become?
The atoms become smaller in atomic radius.
Why do atoms get smaller across a period?
Atoms get smaller across a period because the increasing number of protons in the nucleus pulls the electrons closer to the nucleus, resulting in a stronger attraction and a smaller atomic size.
Is it true Moving across a row of the periodic table the atoms tend to get bigger?
Yes, as you move across a row (period) of the periodic table from left to right, the atomic radius tends to decrease. This is due to the increasing effective nuclear charge, which pulls the electrons closer to the nucleus, making the atoms smaller.
How many atoms fit across the period at the end of this sentence?
Assuming you are talking about a period made by carbon atoms (Pencil lead is almost pure carbon) and that period has a mass of 0.0001g Then the answer is 5x1018 atoms.There are 12.011g of carbon per mol, there are 6.022x1023 atoms per mol.1mol | 6.022x1023 atoms | 0.001 g |-----------|--------------------------|-------------| = 5x1018 atoms/period12.011g | 1 mol | period |
What happens to ionization energy as you move across a period?
Ionization energy generally increases as you move across a period from left to right. This is because the effective nuclear charge, or the attraction between the positively charged nucleus and the negatively charged electrons, increases. As a result, more energy is needed to remove an electron.
What happens to the molecules if they freeze?
well obviously atoms cant stop moving even at absolute 0. so the molecules will simply slow down but it can never stop moving
Why reactivity decreases across a period?
Reactivity decreases across a period because the outermost electrons are held more tightly by the increasing nuclear charge, making it harder for atoms to lose or gain electrons to form compounds. This results in a decrease in chemical reactivity as you move from left to right across a period.
When a substance is raised to its melting teperature what happens to the atom or molecules?
The inter-molecular bonds between the atoms/molecules are broken, releasing the atoms/molecules from a ridged structure to a freely moving mass.
Why do the properties of elements change across the period?
They change because the atomic number and mass differ from each other element. Going across the Periodic Table to the right, the atoms get smaller because another proton is added each time so the effective nuclear charge experienced by the electrons is greater and the electrons are pulled closer to the nucleus. Electronegativity increases as you progress across a period because smaller atoms are usually more likely to gain an electron. Ionization energy increases across a period because the atoms are smaller, pulled closer to the nucleus, so it takes more energy to break an electron away.
What the energy of moving atoms?
Kinetic energy is possessed by moving atoms. It is the energy possessed by particles in motion.
