Georgia Physical Science

Which type of arrangment and movement would particles of mercury display?

• Particles closely packed together and they vibrate back and forth

• Particles are spread far apart and they move quickly

• Particles are close together but they are able to slip past one another

• Particles are spread far apart and electrons are detached from atoms

S8P1b In which state of matter do particles spread and fill the volume of the container that holds them?

• gas

• ice

• solid

• liquid

How is plasma different from gas?

• Plasma has a definite shape, but gas does not

• Gas is hotter than plasma

• Electrons separate from atoms in plasma

• Gas has a definite volume, but plasma does not

A scientist performs an investigation in which thermal energy is removed from a sample of a substance. When the substance begins to change from a gas to a liquid, the scientist measures the temperature of the substance. This temperature is the substance's _______

• melting point

• freezing point

• evaporation point

• condensation point

Tags

NGSS.MS-PS1-4

Which of the following is an example of a chemical change?

• water evaporating

• carbon joining with oxygen to form carbon dioxide

• ice cream melting

• salt dissolving in water to form a solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens during a physical change?

• new substances are formed

• the identity of the substance is changed

• a chemical reaction occurs

• the form of a substance changes but not its identity

A sample of aluminum has a volume of 3.0 cm³ and a mass of 8.1g. Which is the density of aluminum?

• 2.7 g/cm³

• 5.1 g

• 11.1 cm³

• 24.3 g/cm³

Look at the incomplete chemical equation: Ca + Cl₂ --> ?

The reactants are shown. How many chlorine (Cl) atoms must be present in the product that forms this reaction?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

During a chemical reaction, methane (CH₄) and oxygen (O₂) combine to produce carbon dioxide (CO₂) and water (H₂O). The balanced chemical equation identifies the reactants and products for this reaction, along with some of their masses. CH₄ + 2O₂ --> CO₂ + 2H₂0 16g + ? --> 44g + 36 g Which mass of oxygen (O₂) is required for this reaction to occur?

• 16 g

• 36 g

• 44 g

• 64 g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the runner's average speed?

• 1/4 m/s

• 4 m/s

• 10 m/s

• 40 m/s

Tags

NGSS.MS-PS3-1