Answer the questions below by circling the number of the correct response The symbol for potassium is (1) P, (2) K, (3) Sn, (4)Po. A substance that cannot be broken down into simpler substances during a chemical reaction is a[n] (1) element, (2) compound, (3) mixture, (4) none of these. Which of the following is NO
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.
Answer the questions below by circling the number of the correct response
- The symbol for potassium is (1) P, (2) K, (3) Sn, (4)Po.
- A substance that cannot be broken down into simpler substances
during a
(3) mixture, (4) none of these.
- Which of the following is NOT an element? (1) oxygen
(2) nitrogen (3) lead (4) sodium chloride
- Which of the following is the correct symbol for copper? (1) Co (2)
Cu (3) CU (4) cu
- The smallest particle of an element is a[n] (1) atom, (2) molecule,
(3) compound, (4) ion.
- Water can be broken down into hydrogen and oxygen. This is
evidence that water is NOT a[n] (1) compound, (2) molecule,
(3) element, (4) mixture.
- The symbol for silver is (1) Si, (2) S, (3) Au, (4) Ag
- Hg is the symbol for (1) hydrogen, (2) mercury, (3) tin, (4) sodium.
- The symbol for cadmium is (1) Cd, (2) Ca, (3) C, (4) Cm.
- Mg is the symbol for (1) manganese, (2) mercury, (3) silver,
(4) magnesium.
- An example of a substance that can be decomposed by a
chemical change is (1) ammonia, (2) argon, (3) antimony,
(4) arsenic
- Which substance can not be decomposed by a chemical change?
(1) Mercury (II) oxide (2) water (3) potassium chlorate (4) copper
- Which of the following substances can not be decomposed by
chemical change? (1) sulfuric acid (2) water (3) ammonia
(4) argon
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