Q2 BMA Exam 8th Grade 2024-2025

Gary measured 100 mL of water in a graduated cylinder. He then poured the water into various containers. Gary noticed that the water always took the shape of the container into which it was poured. He also knew that the volume of the water never changed. Why can liquids, such as water, change shape?

• The particles in a liquid are very far away from one another.

• The particles in a liquid do not move fast enough to spread apart.

• The particles in a liquid can move past each other.

• The particles in a liquid cannot leave their fixed positions.

Jessica did an investigation about the states of matter. As part of the investigation, Jessica wanted to change a liquid into a solid. What must she do to bring about this change in state?

• Place the liquid in a different container.

• Stir the liquid as quickly and thoroughly as possible.

• Increase the energy of the liquid so that its particles move faster.

• Remove energy from the liquid so that its particles slow down.

Tags

NGSS.MS-PS1-4

The atom contains electrons surrounding a nucleus of protons and neutrons. Which of the following subatomic particles has a negative charge?

• neutron

• electron

• nucleus

• proton

Audra is looking at a diagram of an atom. Which particle(s) does she see inside the nucleus?

• electrons only

• protons only

• electrons and protons

• protons and neutrons

  
  

The model represents a structure of a form of matter. Which of the following does the model represent?

• an atom

• a nucleus

• an element

• a compound

Tags

NGSS.MS-PS1-1

An element is also a pure substance. What is the reason for this?

• An element contains only one type of atom.

• An element can combine with another element.

• Different elements have different properties.

• There are many ways that elements can combine.

Elements are grouped in the periodic table according to the similarities of their properties. For example, the metals are grouped together. Where are the metals located on the periodic table?

• toward the top of the periodic table

• on the right and in the center

• on the left and in the center

• toward the bottom of the periodic table

Elements in the periodic table are grouped into columns and rows. What is the name given to columns in the periodic table?

• groups

• clusters

• periods

• stages

In a neutralization reaction, an acid and a base neutralize each other. Water is one of two products that are produced from the neutralization reaction. What is the other product?

• a gas

• a salt

• a metal

• a protein

Tags

NGSS.MS-PS1-5

Acids can be strong or weak. Which pH value represents the STRONGEST acid?

• pH=12

• pH=7

• pH=5

• pH=1