Flammability
Reaction with bases
Solubility
Reaction with oxygen
Answer:
The correct answer is C) Solubility
Explanation:
Solubility is the example of a physical property from the given options, as it can be observed and measured without changing the substance's chemical identity.
The question is asking which of the listed options is an example of a physical property. A physical property is a characteristic of matter that can be observed or measured without changing the substance's chemical identity. Among the choices given - flammability, reaction with bases, solubility, and reaction with oxygen - solubility is a physical property. This is because solubility refers to a substance's ability to dissolve in a solvent, which can be observed without causing a chemical reaction. On the other hand, flammability and reaction with bases or oxygen are chemical properties, as they describe a substance's ability to react and form new substances.
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with a 4.63 N force at a 63.0° angle.
What is the force of friction on the
toy?
(Hint: You do NOT need to know the
coefficient of friction.)
The force of friction on the toy is 2.10 N and it acts opposite to the direction of its motion.
A force called friction prevents one solid object from rolling or sliding over another. Although frictional forces, such the traction required to walk without slipping, may be advantageous, they can provide a significant amount of resistance to motion.
Given parameters:
mass of the toy dog: M = 0.398 kg.
Applied force: F = 4.63 N.
Angle of application of force: θ = 63.0°
Hence, horizontal component of applied force = F cosθ
= 4.63 × cos63.0° N
= 2.10 N.
As the child drags a 0.398 kg toy dog across flat ground at constant speed, this component of applied force is nullified by force of friction.
Hence, the force of friction on the toy is 2.10 N and it acts opposite to the direction of its motion.
Learn more about friction here:
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Answer:
-2.1 N
Explanation:
c. surface currents
b. wind currents
d. density of currents
A. An ionic bond is an attraction between oppositely charged ions. A covalent bond is a sharing of electrons between atoms.
B. A covalent bond is an attraction between oppositely charged ions. An ionic bond is a sharing of electrons between atoms.
C. There is no difference. Both an ionic bond and a covalent bond share electrons.
D. There is no difference. Both an ionic bond and a covalent bond are attractions between oppositely charged ions.
Question 3
What is a bond between a positive and a negative ion called?
A. covalent bond
B. ionic bond
C. metallic bond
D. polar bond
Question 4
Water (H2O) is composed of the same elements as hydrogen peroxide (H2O2). Why do these substances have different properties?
A.The atoms are arranged differently in each molecule.
B. The molecules are the same.
C. The atoms are the same.
D.Water has more atoms than hydrogen peroxide.
Question 5
What is the definition of a chemical bond?
A. a mutual attraction between the nuclei and electrons in two different atoms
B. a mutual attraction between the nuclei and electrons in a single atom
C. a mutual repulsion between the nuclei and electrons in two different atoms
D. a mutual repulsion between the nuclei and electrons in a single atom