diff --git a/js/atomic-interactions/view/GrabbableParticleNode.js b/js/atomic-interactions/view/GrabbableParticleNode.js
index 5fe3b353..1c957bea 100644
--- a/js/atomic-interactions/view/GrabbableParticleNode.js
+++ b/js/atomic-interactions/view/GrabbableParticleNode.js
@@ -44,6 +44,7 @@ define( function( require ) {
     var initialStartX = this.x;
 
     var inputListener = new SimpleDragHandler( {
+      allowTouchSnag: true,
 
       start: function( event ) {
 
diff --git a/js/atomic-interactions/view/InteractiveInteractionPotentialDiagram.js b/js/atomic-interactions/view/InteractiveInteractionPotentialDiagram.js
index 1e89e0ad..62225935 100644
--- a/js/atomic-interactions/view/InteractiveInteractionPotentialDiagram.js
+++ b/js/atomic-interactions/view/InteractiveInteractionPotentialDiagram.js
@@ -157,6 +157,7 @@ define( function( require ) {
     this.positionMarker.setPickable( true );
     this.positionMarker.touchArea = Shape.circle( 0, 0, 13 );
     this.positionMarker.addInputListener( new SimpleDragHandler( {
+        allowTouchSnag: true,
 
         start: function( event ) {
           // Stop the particle from moving in the model.