Question

17.____ have a definite volume and molecules that are spread out and can move past one another.
a. solids b. liquids c. gases d. plasma

1. the ability of iron to rust is a / an ____ property.

a. chemical b. physical c. environmental d. sustainable

1. a physical change is a change

a. in an items properties like its shape, size or density.
b. that creates a new substance or emits light or heat
c. that creates a smell
d. that cannot be undone

1. what are the living and nonliving things in an environment or area?

a. predator b. producer c. ecosystem d. abiotic factor

1. which of the following is not an example of a physical change?

a. water freezing
b. wood breaking apart
c. salt dissolving in water
d. baking soda and vinegar combine and form bubbles

1. a group of the same species that live together and interact in an environment are called a/an

a. community b. habitat
c. population d. ecosystem

1. which of the following is not a pillar of sustainability?

a. social factors b. economic factors
c. environmental factors d. chemical factors

1. the study of how humans interact with our environment is called

a. environmentalism b. environmental science
c. ecology d. biology

Explanation:

1. Liquids have a definite volume and molecules that can move past one another. Solids have a definite shape and volume, gases have no definite shape or volume, and plasma is a high - energy state.
2. Rusting of iron is a chemical property because it involves a chemical reaction (iron reacting with oxygen to form iron oxide).
3. A physical change is a change in an item's properties like its shape, size or density without creating a new substance.
4. An ecosystem consists of living and non - living things in an environment or area.
5. Baking soda and vinegar combining to form bubbles is a chemical change as a new substance (carbon dioxide gas) is formed. The others are physical changes.
6. A population is a group of the same species that live together and interact in an environment.
7. The pillars of sustainability are social, economic, and environmental factors. Chemical factors are not a pillar of sustainability.
8. Environmental science is the study of how humans interact with our environment. Ecology is the study of the relationships between organisms and their environment, environmentalism is a social movement, and biology is the study of life in general.

Answer:

1. b. liquids
2. a. chemical
3. a. in an item's properties like its shape, size or density
4. c. ecosystem
5. d. Baking soda and vinegar combine and form bubbles
6. c. Population
7. d. Chemical Factors
8. b. environmental science