Physical Science
Which types of changes must follow the law of conservation of mass? Both physical and chemical changes Neither physical nor chemical changes Only physical changes Only chemical changes
Both physical and chemical changes
Which of the following is an example of a chemical property? Density Solubility Flammability Magnetism
Flammability
A chocolate chip cookie is an example of a.. homogeneous mixture heterogeneous mixture suspension colloid
heterogeneous mixture
Two substances were mixed and there was a color change and small flames. What can you infer happened? A physical property was observed A chemical change occurred A change in state from solid to liquid Matter was destroyed
A chemical change occurred
A substance changes state from solid to liquid. What has happened? A physical change A chemical change A chemical reaction The creation of matter
A physical change
What is an isotope? (2 points) Atoms of the same element that have different numbers of neutrons. Atoms of different elements that have different numbers of neutrons. Atoms of the same element that have different numbers of protons. Atoms of different elements that have different numbers of protons.
Atoms of the same element that have different numbers of neutrons
Which of the following is an example of a physical property? Density Flammability Reaction with acids Reaction with water
Density
What does the atomic mass of an atom tell us? How much the atom weighs The number of electrons in the atom Which row the element is in on the periodic table The number of energy levels in the atom
How much the atom weighs
Which of the following describes an element? Matter made up of only one type of atom. A substance made of two or more types of atoms. Two or more types of atoms chemically bonded together. Two or more types of atoms that are not chemically bonded.
Matter made up of only one type of atom
Which of the following is the name for a substance made of two or more types of atoms that are not chemically bonded together? Compound Mixture Solute Molecule
Mixture
What does the atomic number of an atom tell us? How much the atom weighs The number of protons in the atom Which column the element is in on the periodic table The number of electrons it is likely to lose
The number of protons in the atom
Which of the following describes a compound? (2 points) A single type of atom. A particle that is smaller than an atom. Two or more types of atoms chemically bonded together. Two unrelated atoms that are not chemically bonded.
Two or more types of atoms chemically bonded together
In a solution such as salt water, the component that does the dissolving is called the.. solute solvent suspension colloid
solvent