What are the reactants in chemical formula?
the atoms prior to the chemical reaction, found on the left side of the equation
the atoms after the chemical reaction, found on the right side of the equation
the atoms left over after the formation of the new substance
the substance created by chemical change
The reactants in a chemical formula are the atoms or molecules that undergo a chemical reaction. They are typically found on the left side of the equation. The reactants are the starting materials for the reaction and are consumed or transformed into new substances during the chemical change.
What are the reactants in chemical formula?
the atoms prior to the chemical reaction, found on the left side of the equation
the atoms after the chemical reaction, found on the right side of the equation
the atoms left over after the formation of the new substance
the substance created by chemical change
The reactants in a chemical formula are the atoms or molecules that undergo a chemical reaction. They are typically found on the left side of the equation. The reactants are the atoms or molecules that are consumed or transformed during the chemical reaction. The atoms or molecules found on the right side of the equation are the products of the reaction.
what does the law of conservation of mass say about a chemical reaction?
mass is not measurable in a chemical reaction
to balance a chemical equation, additional mass may be created
mass increases as atoms are rearranged during a chemical reaction
in a chemical reaction, mass is neither created nor destroyed
The law of conservation of mass states that in a chemical reaction, mass is neither created nor destroyed. This means that the total mass of the reactants is equal to the total mass of the products. The atoms in a chemical reaction are rearranged, but the total mass remains the same before and after the reaction.
which of the following molecules shows two atoms of hydrogen (H)?
HO2
2CH4
2H2O
H2SO4
The molecule that shows two atoms of hydrogen (H) is H2O.
Q1; Which feature defines a neutral atom
A. a full outer electron shell
B. the ability to change to another substance during a chemical reaction
C. the number of electrons equal to the number of protons
D. a low level of reactivity
Q2; Which phrase describes valence electrons?
A. electrons that are exchanged between atoms
B. the electrons in an atom's outermost energy level
C. the electrons surrounding an atom's nucleus
D. electrons that are shared between atoms
Q3; Why do atoms exchange or share electrons during bonding?
A. to become neutral
B. to obtain a full outer electron shell
C. to attract an ion with the opposite charge
D. to have eight inner level electrons
Q4; How many valence electrons are in an atom of the element fluorine?
A. seven
B. eight
C. two
D. five
Q1: C. the number of electrons equal to the number of protons
Q2: B. the electrons in an atom's outermost energy level
Q3: B. to obtain a full outer electron shell
Q4: A. seven
Which change is likely to happen to an atom of the element strontium (Sr) during bonding?
it will gain electrons, forming a positive ion
it will give up electron, forming a negative ion
it will give up electron, forming a positive ion
it will gain electrons, forming a negative ion