Unit 4 Key term Test

1.

1 point

A property or characteristic of a substance having to do with how the atoms and molecules that make up the substance can be combined with or rearranged into other substances.

2.

1 point

Happening or recurring at regular intervals; Having repeated cycles;

3.

1 point

A pure chemical substance consisting of two or more different chemical elements that can be separated into other substances by chemical reactions.

4.

1 point

The systematic study of the natural world based on the deductions and inferences which can be made, from reproducible observations and measurements of events and parameters within the universe.

5.

1 point

An electron in the outer shell of an atom which can combine with other atoms to form molecules.

6.

1 point

An atom or molecule in which the total number of electrons is not equal to the total number of protons.

7.

1 point

A chemical bond in which one atom loses an electron to form a positive ion and the other atom gains an electron to form a negative ion.

8.

1 point

A combination of chemical symbols and numbers that indicates which elements and how many atoms of each element are present in a compound.

9.

1 point

A reaction that transforms (changes) a substance into a new substance or substances with different properties.

10.

1 point

A type of chemical bond in which atoms are held together in a molecule by sharing one or more electrons in their outer shells.

11.

1 point

The formation of a solid in a solution or inside another solid during a chemical reaction.

12.

1 point

Pertaining to a chemical change that is due to a release of heat.

13.

1 point

Pertaining to a chemical change that is due to the absorption of heat.

14.

1 point

An attraction between atoms or molecules and allows the formation of chemical compounds, which contain two or more different atoms.