Understanding Matter and Life Science

How are mixtures different from compounds?

• Mixtures have a fixed composition, while compounds do not.

• Compounds can be separated by physical means, while mixtures cannot.

• Mixtures can be separated by physical means, while compounds cannot.

• Compounds are made of elements, while mixtures are not.

Which of the following is a property of elements that determines their placement in the Periodic Table?

• Atomic mass

• Atomic number

• Density

• Melting point

What is the primary difference between an epidemic and a pandemic?

• Epidemics are more severe than pandemics.

• Epidemics are localized, while pandemics are global.

• Pandemics are caused by viruses, while epidemics are not.

• Pandemics can be treated, while epidemics cannot.

Which of the following is an example of a physical change in matter?

• Rusting of iron

• Burning of wood

• Melting of ice

• Baking a cake

Tags

NGSS.MS-PS1-4

What indicates a chemical change has occurred?

• Change in shape

• Change in state

• Formation of a gas

• Dissolving sugar in water

Tags

NGSS.MS-PS1-2

Which of the following is a characteristic of viruses that distinguishes them from bacteria?

• Ability to reproduce independently

• Presence of a cell wall

• Lack of cellular structure

• Ability to be treated with antibiotics

In a closed system, what happens to the mass of matter during a chemical reaction?

• It increases

• It decreases

• It remains the same

• It fluctuates

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which state of matter has a definite volume but no definite shape?

• Solid

• Liquid

• Gas

• Plasma

Tags

NGSS.MS-PS1-4

What type of interaction occurs when one organism benefits and the other is harmed?

• Mutualism

• Commensalism

• Parasitism

• Cooperation

Which of the following is an example of a biotic factor in an ecosystem?

• Temperature

• Water

• Soil

• Plants

Tags

NGSS.MS-LS1-4