Matter - Properties & Changes

The picture shows two liquid samples are poured into a beaker. As shown, the liquids don’t mix with each other. Which statement is true?

• Sample A has the least density

• Sample A has greater density

• The densities are the same

• Sample B has the greater density

Tags

NGSS.MS-PS1-2

How is the periodic table organized?

• By atomic number

• By the number of electrons

• By the weight of the atom

• Atomic periodicity

What is the density of a cube that measures 2.7cm on each side and has a mass of 45.3g?

*Round any decimals to the nearest tenth*

• 0.4 g/cm³

• 892.4 g/cm³

• 2.3 g/cm³

• 16.8 g/cm³

Describe the location of non-metals on the periodic table?

• Middle

• Upper left corner

• Lower left corner

• Upper right corner

Energy + 6CO₂ + 6H₂O → 6O₂ + C₆H₁₂O₆

During photosynthesis, sugar C₆H₁₂O₆ is produced from carbon dioxide, water, and sunlight. Which statement BEST explains what happens during photosynthesis?

• Atoms are gained when sugar is formed

• Single atoms are converted into molecules

• Atoms from compounds are lost when sugar is formed

• Atoms of compounds are rearranged to form new compounds

Tags

NGSS.MS-LS1-6

Rutherford conducted his famous "Gold Foil" experiment to learn about atomic structure. The results of his experiment are illustrated in the image. What does the experiment tell you about the structure of an atom?

• The atom is very dense

• The atom is positively charged

• The atom is negatively charged

• The atom is mostly empty space

Tags

NGSS.MS-PS1-1

Suppose you have a container filled with iron and sand. You can separate the iron from the sand if you ____________ so this is a _________.

• add baking soda; chemical compound

• dissolve the sand in water; solution

• melt the sand; mixture

• use a magnet; mixture

What state of matter takes the shape and volume of its container, like the steam coming from the pot in the picture?

• Gas

• Liquid

• Plasma

• Solid

Tags

NGSS.MS-PS1-4

Put the following items in order of their pH from the most acidic to the least acidic.

• Hydrochloric acid, water, bleach

• Water, hydrochloric acid, bleach

• Bleach, hydrochloric acid, water

• Bleach, water, hydrochloric acid

Mass is measured in ____________, and weight is measured in ______________.

• feet, inches

• kilograms, newtons

• meters, pounds

• miles, volume